NBR (Buna-N)
NBR (nitrile rubber, Buna-N) is the standard elastomer for oils, greases and fuels. It is economical, elastic and abrasion-resistant. Pumps with this check valve are rated for fluid temperatures up to 80 °C (see the data sheet of each version).
Typical fluids
Mineral oils, hydraulic oils, diesel, heating oil, greases and oily waste water.
Typical applications
- Oils: petroleum, crude oil, diesel, heating oil, hydraulic and cutting oils, lubricants, greases, edible oils
- Drilling: drilling mud, bentonite, lubricants, plaster mortar
- Resins: natural and synthetic water- and solvent-based resins, monomers and polymers
Limits
Not suitable for ketones, ozone, strong acids and aromatic solvents.
Matching pumps in our range
Versamatic air-operated double diaphragm pumps with this feature are available in these versions:
- Port sizes: 1 1/2" (DN 40), 1" (DN 25), 1/2" (DN 15), 2" (DN 50), 3" (DN 80), 3/4" (DN 20)
- Flow ranges: 0–20 l/min, 20–50 l/min, 50–100 l/min, 100–200 l/min, 200–400 l/min, 400–700 l/min, 700–1100 l/min
- Housing materials: Aluminium, Stainless steel, Cast iron, PVDF, Polypropylene
- Diaphragms: NBR (Buna-N), Neoprene (CR), Santoprene (TPE)
All matching pumps are listed below – use the filters to narrow down flow rate, port size and materials.
Note: material information is for guidance only. Medium, concentration and temperature are decisive – if in doubt we check compatibility for your fluid.
Not sure which pump fits? Send us your medium, flow rate, pressure, temperature, density and viscosity – we will check the selection and reply with an offer.
Select characteristics
- SKU:
- AODD-E2KA2D229C
- HAN:
- E2KA2D229C
- Item weight:
- 42,20 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 2 Inch
- Flow rate: 670 Litres per minute
- Delivery pressure: max. 7,0 bar
- Housing material: PVDF - Kynar
- Diaphragm material: Nitrile - Buna Dome
- Solids size: 6,3 mm
- SKU:
- AODD-E3SS2D229C-ATEX
- HAN:
- E3SS2D229C-ATEX
- Item weight:
- 76,20 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 3 Inch
- Flow rate: 954 Litres per minute
- Delivery pressure: 8,6 bar
- With explosion protection (ATEX)
- Housing material: Stainless Steel
- Diaphragm material: BunaN
- Solids size: 9,5 mmFurther technical data
Compatible repair kits or spare parts
- SKU:
- AODD-E3SS2D220C-B-ATEX
- HAN:
- E3SS2D220C-B-ATEX
- Item weight:
- 76,20 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 3 Inch
- Flow rate: 867 Litres per minute
- Delivery pressure: 8,6 bar
- With explosion protection (ATEX)
- Housing material: Stainless Steel
- Diaphragm material: BunaN
- Solids size: 9,5 mmFurther technical data
Compatible repair kits or spare parts
- SKU:
- AODD-E3SS2R229C-ATEX
- HAN:
- E3SS2R229C-ATEX
- Item weight:
- 76,20 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 3 Inch
- Flow rate: 1033 Litres per minute
- Delivery pressure: 8,6 bar
- With explosion protection (ATEX)
- Housing material: Stainless Steel
- Diaphragm material: BunaN
- Solids size: 9,5 mmFurther technical data
Compatible repair kits or spare parts
- SKU:
- AODD-E3SA2D229C-ATEX
- HAN:
- E3SA2D229C-ATEX
- Item weight:
- 76,20 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 3 Inch
- Flow rate: 1033 Litres per minute
- Delivery pressure: max. 8,6 bar
- With explosion protection (ATEX)
- Housing material: Stainless Steel
- Diaphragm material: Nitrile - Buna Dome
- Solids size: 9,5 mm
- SKU:
- AODD-E3SA2D220C-ATEX
- HAN:
- E3SA2D220C-ATEX
- Item weight:
- 76,20 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 3 Inch
- Flow rate: 886 Litres per minute
- Delivery pressure: max. 8,6 bar
- With explosion protection (ATEX)
- Housing material: Stainless Steel
- Diaphragm material: Nitrile - Buna Dome
- Solids size: 9,5 mm
- SKU:
- AODD-E3SA2R229C-ATEX
- HAN:
- E3SA2R229C-ATEX
- Item weight:
- 76,20 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 3 Inch
- Flow rate: 1033 Litres per minute
- Delivery pressure: max. 8,6 bar
- With explosion protection (ATEX)
- Housing material: Stainless Steel
- Diaphragm material: Nitrile - Buna Rugged
- Solids size: 9,5 mm
- SKU:
- AODD-E3SA2R220C-ATEX
- HAN:
- E3SA2R220C-ATEX
- Item weight:
- 76,20 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 3 Inch
- Flow rate: 886 Litres per minute
- Delivery pressure: max. 8,6 bar
- With explosion protection (ATEX)
- Housing material: Stainless Steel
- Diaphragm material: Nitrile - Buna Rugged
- Solids size: 9,5 mm
- SKU:
- AODD-E3SA2R220C-B-ATEX
- HAN:
- E3SA2R220C-B-ATEX
- Item weight:
- 76,20 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 3 Inch
- Flow rate: 886 Litres per minute
- Delivery pressure: 8,6 bar
- With explosion protection (ATEX)
- Housing material: Stainless Steel
- Diaphragm material: BunaN
- Solids size: 9,5 mmFurther technical data
Compatible repair kits or spare parts
- SKU:
- AODD-E2SA2R2S9A-HP-ATEX
- HAN:
- E2SA2R2S9A-HP-ATEX
- Item weight:
- 65,80 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 2 Inch
- Flow rate: 341 Litres per minute
- Delivery pressure: max. 16,5 bar
- With explosion protection (ATEX)
- Housing material: Stainless Steel
- Diaphragm material: Nitrile - Buna
- Solids size: 6,0 mm
- SKU:
- AODD-E2SA2R2S9A-HP-B-ATEX
- HAN:
- E2SA2R2S9A-HP-B-ATEX
- Item weight:
- 65,80 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 2 Inch
- Flow rate: 341 Litres per minute
- Delivery pressure: max. 16,5 bar
- With explosion protection (ATEX)
- Housing material: Stainless Steel
- Diaphragm material: Nitrile - Buna
- Solids size: 6,0 mm
- SKU:
- AODD-E2SS2D229C-ATEX
- HAN:
- E2SS2D229C-ATEX
- Item weight:
- 65,80 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 2 Inch
- Flow rate: 606 Litres per minute
- Delivery pressure: 8,6 bar
- With explosion protection (ATEX)
- Housing material: Stainless Steel
- Diaphragm material: BunaN
- Solids size: 6,0 mmFurther technical data
Compatible repair kits or spare parts
- SKU:
- AODD-E2SS2D229C-HD-ATEX
- HAN:
- E2SS2D229C-HD-ATEX
- Item weight:
- 65,80 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 2 Inch
- Flow rate: 606 Litres per minute
- Delivery pressure: 8,6 bar
- With explosion protection (ATEX)
- Housing material: Stainless Steel
- Diaphragm material: BunaN
- Solids size: 6,0 mmFurther technical data
Compatible repair kits or spare parts
- SKU:
- AODD-E2AA2R2S9A-HP-ATEX
- HAN:
- E2AA2R2S9A-HP-ATEX
- Item weight:
- 36,70 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 2 Inch
- Flow rate: 341 Litres per minute
- Delivery pressure: max. 16,5 bar
- With explosion protection (ATEX)
- Housing material: Aluminum
- Diaphragm material: Nitrile - Buna
- Solids size: 6,0 mm
- SKU:
- AODD-E2AA2R2S9A-HP-B-ATEX
- HAN:
- E2AA2R2S9A-HP-B-ATEX
- Item weight:
- 36,70 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 2 Inch
- Flow rate: 341 Litres per minute
- Delivery pressure: max. 16,5 bar
- With explosion protection (ATEX)
- Housing material: Aluminum
- Diaphragm material: Nitrile - Buna
- Solids size: 6,0 mm
- SKU:
- AODD-E2SS2R220C-ATEX
- HAN:
- E2SS2R220C-ATEX
- Item weight:
- 65,80 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 2 Inch
- Flow rate: 700 Litres per minute
- Delivery pressure: 8,6 bar
- With explosion protection (ATEX)
- Housing material: Stainless Steel
- Diaphragm material: BunaN
- Solids size: 6,4 mmFurther technical data
Compatible repair kits or spare parts
- SKU:
- AODD-E2SS2R220C-B-ATEX
- HAN:
- E2SS2R220C-B-ATEX
- Item weight:
- 65,80 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 2 Inch
- Flow rate: 700 Litres per minute
- Delivery pressure: 8,6 bar
- With explosion protection (ATEX)
- Housing material: Stainless Steel
- Diaphragm material: BunaN
- Solids size: 6,4 mmFurther technical data
Compatible repair kits or spare parts
- SKU:
- AODD-E2SA2D229C-ATEX
- HAN:
- E2SA2D229C-ATEX
- Item weight:
- 65,80 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 2 Inch
- Flow rate: 606 Litres per minute
- Delivery pressure: max. 8,6 bar
- With explosion protection (ATEX)
- Housing material: Stainless Steel
- Diaphragm material: Nitrile - Buna Dome
- Solids size: 6,0 mm
- SKU:
- AODD-E2SA2D229C-HD-ATEX
- HAN:
- E2SA2D229C-HD-ATEX
- Item weight:
- 65,80 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 2 Inch
- Flow rate: 606 Litres per minute
- Delivery pressure: 8,6 bar
- With explosion protection (ATEX)
- Housing material: Stainless Steel
- Diaphragm material: BunaN
- Solids size: 6,0 mmFurther technical data
Compatible repair kits or spare parts
- SKU:
- AODD-E40SS2D229C-B-ATEX
- HAN:
- E40SS2D229C-B-ATEX
- Item weight:
- 42,00 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 1,5 Inch
- Flow rate: 465 litres per minute
- Delivery pressure: 8,6 bar
- Housing material: Stainless Steel
- Diaphragm material: BunaN® - NBR - Nitrile
- Solids size: max. 6,0 mm
- SKU:
- AODD-E2SA2D220C-ATEX
- HAN:
- E2SA2D220C-ATEX
- Item weight:
- 65,80 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 2 Inch
- Flow rate: 700 Litres per minute
- Delivery pressure: max. 8,6 bar
- With explosion protection (ATEX)
- Housing material: Stainless Steel
- Diaphragm material: Nitrile - Buna Dome
- Solids size: 6,4 mm
- SKU:
- AODD-E2SA2R220C-ATEX
- HAN:
- E2SA2R220C-ATEX
- Item weight:
- 65,80 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 2 Inch
- Flow rate: 700 Litres per minute
- Delivery pressure: max. 8,6 bar
- With explosion protection (ATEX)
- Housing material: Stainless Steel
- Diaphragm material: Nitrile - Buna Rugged
- Solids size: 6,4 mm
- SKU:
- AODD-E2SA2R220C-B-ATEX
- HAN:
- E2SA2R220C-B-ATEX
- Item weight:
- 65,80 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 2 Inch
- Flow rate: 700 Litres per minute
- Delivery pressure: 8,6 bar
- With explosion protection (ATEX)
- Housing material: Stainless Steel
- Diaphragm material: BunaN
- Solids size: 6,4 mmFurther technical data
Compatible repair kits or spare parts
- SKU:
- AODD-E40SA2D229C-ATEX
- HAN:
- E40SA2D229C-ATEX
- Item weight:
- 42,00 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 1,5 Inch
- Flow rate: 465 litres per minute
- Delivery pressure: 8,6 bar
- Housing material: Stainless Steel
- Diaphragm material: BunaN® - NBR - Nitrile
- Solids size: max. 6,0 mm
- SKU:
- AODD-E40SA2D229C-B-ATEX
- HAN:
- E40SA2D229C-B-ATEX
- Item weight:
- 42,00 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 1,5 Inch
- Flow rate: 465 litres per minute
- Delivery pressure: 8,6 bar
- Housing material: Stainless Steel
- Diaphragm material: BunaN® - NBR - Nitrile
- Solids size: max. 6,0 mm
- SKU:
- AODD-E4SA2R229-ATEX
- HAN:
- E4SA2R229-ATEX
- Item weight:
- 29,50 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 1,5 Inch
- Flow rate: 275 litres per minute
- Delivery pressure: 8,6 bar
- Housing material: Stainless Steel
- Diaphragm material: BunaN® - NBR - Nitrile
- Solids size: max. 4,8 mm
- SKU:
- AODD-E4SA2R229-HD-ATEX
- HAN:
- E4SA2R229-HD-ATEX
- Item weight:
- 29,50 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 1,5 Inch
- Flow rate: 275 litres per minute
- Delivery pressure: 8,6 bar
- Housing material: Stainless Steel
- Diaphragm material: BunaN® - NBR - Nitrile
- Solids size: max. 4,8 mm
- SKU:
- AODD-E2PA2D229C-CP
- HAN:
- E2PA2D229C-CP
- Item weight:
- 31,30 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 2 Inch
- Flow rate: 670 Litres per minute
- Delivery pressure: 6,8 bar
- Housing material: Polypropylene
- Diaphragm material: BunaN
- Solids size: 6,3 mmFurther technical data
Compatible repair kits or spare parts
- SKU:
- AODD-E2PA2D229C
- HAN:
- E2PA2D229C
- Item weight:
- 31,30 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 2 Inch
- Flow rate: 670 Litres per minute
- Delivery pressure: max. 7,0 bar
- Housing material: Polypropylene
- Diaphragm material: Nitrile - Buna Dome
- Solids size: 6,3 mm
- SKU:
- AODD-U2PP2D229
- HAN:
- U2PP2D229
- Item weight:
- 30,00 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 2 Inch
- Flow rate: 727 Litres per minute
- Delivery pressure: max. 8,5 bar
- Housing material: Polypropylene
- Diaphragm material: Nitrile - Buna Dome
- Solids size: 6,0 mm
- SKU:
- AODD-E4SA2R220-ATEX
- HAN:
- E4SA2R220-ATEX
- Item weight:
- 29,50 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 1,5 Inch
- Flow rate: 268 litres per minute
- Delivery pressure: 8,6 bar
- Housing material: Stainless Steel
- Diaphragm material: BunaN® - NBR - Nitrile
- Solids size: max. 4,8 mm
- SKU:
- AODD-E4SA2R220-B-ATEX
- HAN:
- E4SA2R220-B-ATEX
- Item weight:
- 29,50 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 1,5 Inch
- Flow rate: 268 litres per minute
- Delivery pressure: 8,6 bar
- Housing material: Stainless Steel
- Diaphragm material: BunaN® - NBR - Nitrile
- Solids size: max. 4,8 mm
- SKU:
- AODD-E3CA2D220C-ATEX
- HAN:
- E3CA2D220C-ATEX
- Item weight:
- 76,20 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 3 Inch
- Flow rate: 886 Litres per minute
- Delivery pressure: max. 8,6 bar
- With explosion protection (ATEX)
- Housing material: Cast Iron
- Diaphragm material: Nitrile - Buna Dome
- Solids size: 9,5 mm
- SKU:
- AODD-E3CA2D220C-B-ATEX
- HAN:
- E3CA2D220C-B-ATEX
- Item weight:
- 76,20 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 3 Inch
- Flow rate: 886 Litres per minute
- Delivery pressure: 8,6 bar
- With explosion protection (ATEX)
- Housing material: Cast Iron
- Diaphragm material: BunaN
- Solids size: 9,5 mmFurther technical data
Compatible repair kits or spare parts
- SKU:
- AODD-E1SA2R2S9A-HP-ATEX
- HAN:
- E1SA2R2S9A-HP-ATEX
- Item weight:
- 18,10 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 1 Inch
- Flow rate: 125 Litres per minute
- Delivery pressure: max. 8,0 bar
- With explosion protection (ATEX)
- Housing material: Stainless Steel
- Diaphragm material: Nitrile - Buna
- Solids size: 3,0 mm
- SKU:
- AODD-E1SA2R2S9A-HP-B-ATEX
- HAN:
- E1SA2R2S9A-HP-B-ATEX
- Item weight:
- 18,10 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 1 Inch
- Flow rate: 125 Litres per minute
- Delivery pressure: max. 8,0 bar
- With explosion protection (ATEX)
- Housing material: Stainless Steel
- Diaphragm material: Nitrile - Buna
- Solids size: 3,0 mm
- SKU:
- AODD-E3CA2R220C-ATEX
- HAN:
- E3CA2R220C-ATEX
- Item weight:
- 76,20 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 3 Inch
- Flow rate: 886 Litres per minute
- Delivery pressure: max. 8,6 bar
- With explosion protection (ATEX)
- Housing material: Cast Iron
- Diaphragm material: Nitrile - Buna Rugged
- Solids size: 9,5 mm
- SKU:
- AODD-E3CA2R220C-B-ATEX
- HAN:
- E3CA2R220C-B-ATEX
- Item weight:
- 76,20 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 3 Inch
- Flow rate: 886 Litres per minute
- Delivery pressure: 8,6 bar
- With explosion protection (ATEX)
- Housing material: Cast Iron
- Diaphragm material: BunaN
- Solids size: 9,5 mmFurther technical data
Compatible repair kits or spare parts
- SKU:
- AODD-E2PP2R2S9A-F
- HAN:
- E2PP2R2S9A-F
- Item weight:
- 31,30 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 2 Inch
- Flow rate: 670 Litres per minute
- Delivery pressure: max. 7,0 bar
- Housing material: Polypropylene
- Diaphragm material: Nitrile - Buna Rugged
- Solids size: 6,3 mm
- SKU:
- AODD-E1AA2R2S9A-HP-ATEX
- HAN:
- E1AA2R2S9A-HP-ATEX
- Item weight:
- 12,20 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 1 Inch
- Flow rate: 125 Litres per minute
- Delivery pressure: max. 8,0 bar
- With explosion protection (ATEX)
- Housing material: Aluminum
- Diaphragm material: Nitrile - Buna
- Solids size: 3,0 mm
- SKU:
- AODD-E1AA2R2S9A-HP-B-ATEX
- HAN:
- E1AA2R2S9A-HP-B-ATEX
- Item weight:
- 12,20 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 1 Inch
- Flow rate: 125 Litres per minute
- Delivery pressure: max. 8,0 bar
- With explosion protection (ATEX)
- Housing material: Aluminum
- Diaphragm material: Nitrile - Buna
- Solids size: 3,0 mm
- SKU:
- AODD-E3AA2D229C-ATEX
- HAN:
- E3AA2D229C-ATEX
- Item weight:
- 66,20 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 3 Inch
- Flow rate: 1033 Litres per minute
- Delivery pressure: max. 8,6 bar
- With explosion protection (ATEX)
- Housing material: Aluminum
- Diaphragm material: Nitrile - Buna Dome
- Solids size: 9,5 mm
- SKU:
- AODD-E3AA2D220C-B-SS
- HAN:
- E3AA2D220C-B-SS
- Item weight:
- 49,00 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 3 Inch
- Flow rate: 867 Litres per minute
- Delivery pressure: 8,6 bar
- Housing material: Aluminum
- Diaphragm material: BunaN
- Solids size: 9,5 mmFurther technical data
Compatible repair kits or spare parts
- SKU:
- AODD-E3AA2D220C-B-SS-ATEX
- HAN:
- E3AA2D220C-B-SS-ATEX
- Item weight:
- 49,00 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 3 Inch
- Flow rate: 867 Litres per minute
- Delivery pressure: 8,6 bar
- With explosion protection (ATEX)
- Housing material: Aluminum
- Diaphragm material: BunaN
- Solids size: 9,5 mmFurther technical data
Compatible repair kits or spare parts
- SKU:
- AODD-E3AA2R229C-ATEX
- HAN:
- E3AA2R229C-ATEX
- Item weight:
- 66,20 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 3 Inch
- Flow rate: 1033 Litres per minute
- Delivery pressure: max. 8,6 bar
- With explosion protection (ATEX)
- Housing material: Aluminum
- Diaphragm material: Nitrile - Buna Rugged
- Solids size: 9,5 mm
- SKU:
- AODD-E3AA2R220C-B-SS-ATEX
- HAN:
- E3AA2R220C-B-SS-ATEX
- Item weight:
- 49,00 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 3 Inch
- Flow rate: 886 Litres per minute
- Delivery pressure: 8,6 bar
- With explosion protection (ATEX)
- Housing material: Aluminum
- Diaphragm material: BunaN
- Solids size: 9,5 mmFurther technical data
Compatible repair kits or spare parts
- SKU:
- AODD-E3AA2D220C-ATEX
- HAN:
- E3AA2D220C-ATEX
- Item weight:
- 49,00 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 3 Inch
- Flow rate: 886 Litres per minute
- Delivery pressure: max. 8,6 bar
- With explosion protection (ATEX)
- Housing material: Aluminum
- Diaphragm material: Nitrile - Buna Dome
- Solids size: 9,5 mm
- SKU:
- AODD-E3AA2D220C-B-ATEX
- HAN:
- E3AA2D220C-B-ATEX
- Item weight:
- 49,00 kg
- Self-priming air-operated diaphragm pump (dry)
- Connection size: 3 Inch
- Flow rate: 867 Litres per minute
- Delivery pressure: 8,6 bar
- With explosion protection (ATEX)
- Housing material: Aluminum
- Diaphragm material: BunaN
- Solids size: 9,5 mmFurther technical data
Compatible repair kits or spare parts