O-ring 018 — NBR 90A, 18.77 x 1.78 mm, AS568A
Description:
Size: 18.77 mm (ID) x 1.78 mm (CS)
Standard: AS568A (dash size 018)
Material: NBR (Nitrile Butadiene Rubber)
Hardness: 90A (Shore A)
Key properties:
Excellent resistance to oils, fuels, and hydrocarbons
Good mechanical strength and wear resistance
Moderate resistance to heat; typical continuous use up to ~100°C (depends on application)
Not recommended for prolonged exposure to ozone, weathering, or ketones
Applications:
Static and low-dynamic sealing in hydraulic and pneumatic fittings
Fuel systems, oil-handling equipment, pumps, and valves
General industrial sealing where oil and fuel resistance are required
Notes:
Confirm gland dimensions and tolerances per AS568A for proper compression and sealing performance
For higher temperature or chemical resistance, consider alternative elastomers such as FKM (Viton) or EPDM depending on media compatibility
Available in single-piece quantities or bulk; contact Univergo for pricing and lead times on bulk orders
O-ring 018 — NBR 90A, 18.77 x 1.78 mm, AS568A
Description:
Size: 18.77 mm (ID) x 1.78 mm (CS)
Standard: AS568A (dash size 018)
Material: NBR (Nitrile Butadiene Rubber)
Hardness: 90A (Shore A)
Key properties:
Excellent resistance to oils, fuels, and hydrocarbons
Good mechanical strength and wear resistance
Moderate resistance to heat; typical continuous use up to ~100°C (depends on application)
Not recommended for prolonged exposure to ozone, weathering, or ketones
Applications:
Static and low-dynamic sealing in hydraulic and pneumatic fittings
Fuel systems, oil-handling equipment, pumps, and valves
General industrial sealing where oil and fuel resistance are required
Notes:
Confirm gland dimensions and tolerances per AS568A for proper compression and sealing performance
For higher temperature or chemical resistance, consider alternative elastomers such as FKM (Viton) or EPDM depending on media compatibility
Available in single-piece quantities or bulk; contact Univergo for pricing and lead times on bulk orders