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.

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