Is the O-ring seal, NBR90 suitable for general-purpose sealing in temperatures from -30Â°C to +100Â°C?

Yes. The O-ring seal, NBR90 is suitable for general-purpose sealing in temperatures from -30Â°C to +100Â°C. NBR (nitrile butadiene rubber) with a hardness around 90 Shore A offers good resistance to oils, fuels, greases and many common hydraulic fluids, and performs well across the stated temperature range for general sealing tasks. Caveats: avoid prolonged exposure near the upper limit (+100Â°C) with aggressive chemicals or high steam/ozone environments, and verify compatibility if the application involves strong acids, ketones, chlorinated hydrocarbons, or concentrated aromatic solvents. For dynamic seals with rapid motion or very low-temperature flexing close to -30Â°C, consider testing for extrusion, wear and sealing performance. If the service includes high pressures, prolonged high heat, or critical safety requirements, specify application conditions and consider alternative materials (e.g., FKM, EPDM, silicone) as appropriate.

Can O-ring seal, NBR90 resist oils and fuels commonly encountered in industrial applications?

Yes. O-ring seal, NBR90 (nitrile rubber, hardness 90 Shore A) is generally suitable for resisting many oils and fuels commonly encountered in industrial applications. NBR offers good resistance to mineral oils, hydraulic fluids, gasoline and diesel, providing effective sealing for static and many dynamic applications. However, NBR90 has limited resistance to aromatic hydrocarbons (e.g., toluene, xylene), ketones, esters, and certain aggressive synthetic fluids; swelling, hardening or loss of physical properties can occur with prolonged exposure or at elevated temperatures. For applications with high temperatures, aggressive fuels, biodiesel blends, or specialty fluids, confirm compatibility with specific fluids, concentration and temperature, or consider alternative materials (e.g., FKM, HNBR) and testing prior to service.

What are the recommended installation lubricants for O-ring seal, NBR90 to prevent damage during assembly?

For O-ring seal, NBR90 (General purpose O-ring. Material: NBR90), recommended installation lubricants are: - Silicone-based lubricants (low-viscosity silicone oil or silicone grease). compatible with NBR90, provide good slipperiness, prevent pinching and rolling during assembly. - Mineral oil-based light machine oils (e.g., ISO VG 32/46 light hydraulic oil). generally compatible with NBR/NBR90 for short-term contact; reduces friction during installation. - Petroleum jelly (white soft paraffin/mineral petrolatum). common, easy to apply, protects the elastomer during fitting; ensure high-purity grade to avoid additives. - Glycerin or water-soluble lubricants (for aqueous applications). compatible for temporary assembly where petroleum products are undesirable; verify formulation compatibility with NBR90. - PTFE-based assembly pastes or greases. provide excellent lubrication and abrasion protection; use formulations confirmed safe for NBR compounds. Precautions: - Avoid strong solvents, ketones, aromatic hydrocarbons, strong acids/bases, and chlorinated hydrocarbons (they can swell, harden, or degrade NBR90). - Avoid highly aromatic or chlorinated oils and fuels; test if exposure is possible. - Use minimal lubricant sufficient to ease assembly; excessive quantities can attract dirt or affect sealing in some applications. - Always verify compatibility with the specific NBR90 compound and the system fluid through manufacturer data or compatibility tests, especially for long-term exposure and elevated temperatures. Typical application: apply a thin, even layer to the O-ring and mating surfaces to reduce friction and prevent damage during installation.

O-ring, NBR90

All products, Fittings for high-pressure hoses/

Additional information

Maximum operating temperature [°C]	100
Minimum operating temperature [°C]	-30

O-ring for general use. Material: NBR90.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
TI-UOZ110-09	O-ring 7.66x1.78 mm, NBR90	-	-	In stock	Enquiry
TI-UOZ110-11	O-ring 9.25x1.78 mm, NBR90	-	-	In stock	Enquiry
TI-UOZ110-13	O-ring 12.42x1.78 mm, NBR90	-	-	In stock	Enquiry
TI-UOZ110-16	O-ring 15.60x1.78 mm, NBR90	-	-	In stock	Enquiry
TI-UOZ110-19	O-ring 18.77x1.78 mm, NBR90	-	-	In stock	Enquiry
TI-UOZ110-23	O-ring 23.53x1.78 mm, NBR90	-	-	In stock	Enquiry
TI-UOZ110-27	O-ring 29.87x1.78 mm, NBR90	-	-	In stock	Enquiry
TI-UOZ110-32	O-ring 37.82x1.78 mm, NBR90	-	-	In stock	Enquiry