Is the O-ring Seal NBR90 (Sizes 6.5x1 to 50.4x3.53) compatible with common hydraulic oils and fuels used in industrial equipment?

Yes. O-ring Seal NBR90 (Sizes 6.5x1 to 50.4x3.53) is compatible with common hydraulic oils and many industrial fuels. Made from high-quality NBR (nitrile rubber) with a hardness of 90 Shore, it offers excellent resistance to oils, fuels and typical operating fluids encountered in hydraulic assemblies and general industrial equipment. Its robust construction and precise dimensions ensure a secure fit and durable sealing performance in demanding environments, making it suitable for both maintenance and new installations. Note: While NBR90 resists most mineral oils and common fuels, compatibility can vary with specific fluids, temperatures and additives. For critical applications, verify compatibility with the exact fluid formulation and operating conditions before use.

Can the O-ring Seal NBR90 (Sizes 6.5x1 to 50.4x3.53) withstand high-pressure hydraulic systems and repeated compression cycles without losing sealing integrity?

O-ring Seal NBR90 (Sizes 6.5x1 to 50.4x3.53) is well-suited for many hydraulic applications thanks to its high-quality NBR compound and 90 Shore hardness. The material offers excellent resistance to oils, fuels and common hydraulic fluids, and the robust construction and precise dimensions promote a secure fit and consistent sealing. These features make it capable of withstanding typical high-pressure hydraulic environments and repeated compression cycles without immediate loss of sealing integrity. However, performance under high-pressure and dynamic cycling depends on system-specific factors: actual pressure levels, temperature range, frequency and amplitude of compression cycles, surface finish and hardness of mating components, extrusion gaps, and presence of aggressive additives. NBR at 90 Shore is stiffer and more extrusion-resistant than softer grades, improving durability under compression, but its temperature and chemical limits are lower than some specialty elastomers (e.g., FKM, HNBR, polyurethane). For very high pressures, extreme temperatures, aggressive fluids, or tight extrusion gaps, additional measures (backup rings, appropriate gland design, or alternative materials) may be required. Conclusion: O-ring Seal NBR90 (Sizes 6.5x1 to 50.4x3.53) can reliably handle many high-pressure hydraulic systems and repeated cycles, provided operating conditions fall within NBR’s limits and proper gland design/extrusion control are applied. For extreme conditions, validate with application-specific testing or consider higher-performance materials.

O-ring Seal NBR90 (Sizes 6.5×1 to 50.4×3.53)

All products, General purpose seals/

O-ring Seal NBR90 (Sizes 6.5x1 to 50.4x3.53)

Additional information

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

This versatile circular cross-section gasket, available in a wide range of sizes from 6.5×1 to 50.4×3.53, is designed to deliver reliable sealing performance in numerous industrial and technical applications. Manufactured from high-quality NBR material with a hardness of 90 Shore, it ensures excellent resistance to oils, fuels, and many common operating fluids, making it a dependable choice for demanding environments. Its robust construction provides long-lasting durability, while the precise dimensions guarantee a secure fit and consistent sealing efficiency. Ideal for both standard maintenance and new installations, this o-ring combines strength, flexibility, and chemical resistance, offering a cost-effective solution that enhances equipment reliability and minimizes downtime. Whether used in mechanical systems, hydraulic assemblies, or general-purpose sealing tasks, it represents a trusted component that supports optimal performance and operational safety.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
TI-UO-006,5X1-N90	O-ring 6.5x1 NBR90	-	-	In stock	Enquiry
TI-UO-007X1,5-N90	O-ring 7x1.5 NBR90	-	-	In stock	Enquiry
TI-UO-008,1X1,6-N90	O-ring 8.1x1.6 NBR90	-	-	In stock	Enquiry
TI-UO-010,82X1,78-N90	O-ring 10.82x1.78 NBR90	-	-	In stock	Enquiry
TI-UO-012,1X1,6-N90	O-ring 12.1x1.6 NBR90	-	-	In stock	Enquiry
TI-UO-012X2-N90	O-ring 12x2 NBR90	-	-	In stock	Enquiry
TI-UO-014,3X2,4-N90	O-ring 14.3x2.4 NBR90	-	-	In stock	Enquiry
TI-UO-017,13X2,62-N90	O-ring 17.13x2.62 NBR90	-	-	In stock	Enquiry
TI-UO-018,72X2,62-N90	O-ring 18.72x2.62 NBR90	-	-	In stock	Enquiry
TI-UO-025,07X2,62-N90	O-ring 25.07x2.62 NBR90	-	-	In stock	Enquiry
TI-UO-028,17X3,53-N90	O-ring 28.17x3.53 NBR90	-	-	In stock	Enquiry
TI-UO-029,82X2,62-N90	O-ring 29.82x2.62 NBR90	-	-	In stock	Enquiry
TI-UO-034,52X3,53-N90	O-ring 34.52x3.53 NBR90	-	-	In stock	Enquiry
TI-UO-036,1X3,53-N90	O-ring 36.1x3.53 NBR90	-	-	In stock	Enquiry
TI-UO-036X2,5-N90	O-ring 36x2.5 NBR90	-	-	In stock	Enquiry
TI-UO-047,22X3,53-N90	O-ring 47.22x3.53 NBR90	-	-	In stock	Enquiry
TI-UO-050,4X3,53-N90	O-ring 50.4x3.53 NBR90	-	-	In stock	Enquiry

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This versatile circular cross-section gasket, available in a wide range of sizes from 6.5×1 to 50.4×3.53, is designed to deliver reliable sealing performance in numerous industrial and technical applications. Manufactured from high-quality NBR material with a hardness of 90 Shore, it ensures excellent resistance to oils, fuels, and many common operating fluids, making it a dependable choice for demanding environments. Its robust construction provides long-lasting durability, while the precise dimensions guarantee a secure fit and consistent sealing efficiency. Ideal for both standard maintenance and new installations, this o-ring combines strength, flexibility, and chemical resistance, offering a cost-effective solution that enhances equipment reliability and minimizes downtime. Whether used in mechanical systems, hydraulic assemblies, or general-purpose sealing tasks, it represents a trusted component that supports optimal performance and operational safety.