Nitrile

Small black round-cord O-Ring beside a clear beaker of pale amber PAG lubricant, modern rotary screw compressor softly blurred in the background

Ucon Lubricant 50-HB-260 O-Ring Compatibility: Which Compounds Hold Up

Ucon Lubricant 50-HB-260 O-Ring guide for PAG compressor, hydraulic, and metalworking fluids: chart ratings, which elastomers to use, and which lack data.

Clear beaker of amber calcine process liquor with a small black O-Ring submerged in the liquid, mineral processing plant in the background

Calcine Liquors O-Ring Compatibility: Which Compounds Hold Up

Calcine liquors O-Ring guide for mineral processing and metallurgy: chart ratings, which elastomers hold up in aqueous calcination circuits, and which to avoid.

Clear glass beaker of naphtha with a black O-Ring falling into the liquid

Naphtha O-Ring Compatibility: Which Compounds Hold Up

Naphtha (petroleum solvent) O-Ring guide: which elastomers swell or fail, why FKM and nitrile usually win, and how to read the chemical compatibility chart for VM&P and solvent naphtha.

Black Freudenberg N888 nitrile aerospace O-Ring

Freudenberg N888: Low-Temp Aerospace Nitrile O-Ring (70 Duro NBR)

Freudenberg N888 is a 70 durometer low-temperature nitrile (NBR/Buna-N) O-Ring for aerospace: flexible to -65°F, qualified to MIL-G-5514 and SAE AS5440, built to AS28775, MS28775, and MS28784.

HNBR vs Buna-N Nitrile O-Rings: Same Fit, Longer Life

HNBR (Highly Saturated Nitrile) O-Rings drop into the same sizes as standard Buna-N and add higher heat, better wear, and longer service life. Full side-by-side.

HNBR (Hydrogenated Nitrile / HSN) O-Rings

HNBR (hydrogenated nitrile, HSN) O-Ring guide: temperature range, refrigerant and sour-gas resistance, cure systems, durometers, limitations, and the grades we stock.

Nitrile (Buna-N / NBR) O-Rings

Nitrile (Buna-N, NBR) O-Ring guide: temperature range, ACN content and what it changes, oil and fuel resistance, durometers, mil-spec grades, limitations, and everything we stock.