471 Viton O-Ring 75A Durometer 22in ID Pack of 25 - Chemical & Heat

In this review the 471 Viton O-ring pack is judged on fit, chemical resistance, and heat performance for industrial and hydraulic seals; the bottom line is that this set of 25 black, round Viton rings is best for users needing reliable, heat- and fuel-resistant replacements. The reviewer found these O-rings particularly useful as replacements where dimensional accuracy and material compatibility matter, delivering consistent leak resistance and durability in demanding environments.

Key Features

• Material: Made of Viton fluorocarbon elastomer for broad chemical and fuel resistance, which reduces swelling and degradation in many aggressive fluids.
• Temperature range: Rated from -15 degrees F to 400 degrees F, giving a wide operating window for both cold starts and high-heat engine or process areas.
• Durometer: 75A hardness provides good resistance to penetration while remaining flexible enough for reliable static and dynamic seals.
• Cross-section: Round cross-section designed to seal between cylindrical overlapping surfaces, improving contact and leak prevention in typical O-ring grooves.
• Standards: Manufactured to meet AS568A sizes, ensuring consistent dimensions that fit common hardware and replacement needs.
• Pack quantity: Comes as a pack of 25, which is convenient for maintenance kits, multiple repairs, or stocking spares.

Who It's For

This product suits maintenance technicians, hobbyists, and equipment owners who need dependable replacements for fuel systems, hydraulic lines, or plumbing seals where exposure to fuels, aromatic and aliphatic hydrocarbons, and elevated temperatures is expected. It is especially useful when multiple spares are needed, such as servicing bottles, pumps, or firearm components that require consistent sized rings.

Those who should look elsewhere include users needing compatibility with strong alkalis, amines, glycol-based brake fluids, or super-heated steam, since Viton is vulnerable to these chemicals. Also choose a different material if extreme low-temperature flexibility below -15 degrees F is required.

Pros & Cons

Pros

• Good chemical and fuel resistance for a wide range of applications, reducing the need for frequent replacements.
• Wide temperature tolerance lets the rings perform from cold conditions up to high-heat systems without rapid failure.
• Consistent size and hardness make these rings reliable drop-in replacements for many AS568A applications, with customers noting fit and leak resistance.

Cons

• Not compatible with certain low molecular organic acids, ammonia gas, alkalis, amines, and some brake fluids, so chemical compatibility checks are required.

Specifications

Material	Viton (fluorocarbon elastomer)
Color	Black
Inside Diameter (ID)	22 in
Outside Diameter (OD)	22-1/2 in
Width	1/4 in
Durometer	75A
Temperature Range	-15 degrees F to 400 degrees F

Our Verdict

The 471 Viton O-ring pack is a practical, cost-effective choice for anyone needing robust, heat- and fuel-resistant seals in common AS568A sizes; it is particularly good value when multiple replacements are required and performs well in applications that avoid incompatible chemicals.

Frequently Asked Questions

Are these O-rings suitable for fuel and oil applications?
Yes, Viton offers strong resistance to many fuels, aromatic and aliphatic hydrocarbons, and silicone oils, making these rings suitable for many fuel and oil sealing tasks.

Will these O-rings work at high temperatures?
They are rated to 400 degrees F, so they handle most high-heat environments short of super-heated steam conditions that can damage Viton.

How do I know if they will fit my part?
These rings follow AS568A sizing with a 22 in ID and 22-1/2 in OD and 1/4 in width, so compare those dimensions to your groove or mating surfaces to confirm fit.