Mr O-Ring 460 Viton O-Ring 90A Durometer 15-1/2in ID - Durable Seal

In this review the Mr O-Ring 460 Viton O-Ring is assessed for workshop and industrial sealing tasks where chemical and heat resistance matter most. The bottom line: this single-pack Viton o-ring is for professionals and hobbyists who need a robust, high-temperature seal that resists fuels, oils and many solvents. It stands out because the 90A durometer formulation keeps a tight cross-section under stress while tolerating temperatures up to 232C, making it a practical replacement or spare for equipment exposed to harsh fluids or high heat.

Key Features

• 460 Viton material: offers broad chemical resistance, so it performs well with petroleum, fuel blends and many organic solvents without rapid degradation.
• 90A durometer: delivers a firm seal that resists extrusion and maintains shape under pressure for reliable sealing in demanding applications.
• Nominal and actual sizes: nominal 15-1/2in ID with actual measured ID 15.475in and OD 16.025in, providing clarity for exact fit checks.
• Wide temperature range: rated from -26C to 232C, enabling use across cold starts and very high temperature operating conditions.
• AS568 size standard: built to industry sizing, which simplifies replacement and compatibility with existing grooves and housings.
• Shelf-life unlimited: can be stored as a spare without worrying about expiration, useful for maintenance kits.

Who It's For

This o-ring is aimed at technicians, fabricators and maintenance professionals who need a dependable seal in environments involving fuels, hydraulic fluids, silicone oils, or elevated temperatures. The 90A hardness suits static and low-dynamic seals where stiffness and chemical resistance are priorities.

Those who need extremely soft seals for delicate low-pressure applications or who require materials certified for food contact should look elsewhere; Viton is a high-performance elastomer but not intended for every low-hardness or food-grade use case.

Pros & Cons

Pros

• Excellent resistance to fuels, mineral oils, and many solvents for long service life in aggressive environments.
• High temperature capability up to 232C allows use in hot engine or process applications.
• Accurate actual dimensions listed make it easier to confirm fit before installation.

Cons

• 90A hardness may be too stiff for some dynamic sealing points or where very low compression set is required.

Specifications

Material	Viton (FKM) 460
Durometer	90A
Nominal dimensions	15-1/2in ID, 16in OD, 1/4in CS
Actual dimensions	15.475in ID, 16.025in OD, 0.275in CS
Metric dimensions	393.07 mm ID, 407.05 mm OD, 6.99 mm CS
Temperature range	-26C (-15F) to 232C (450F)

Our Verdict

For anyone replacing or stocking a seal for fuel systems, hydraulic assemblies or high-temperature equipment, this Mr O-Ring 460 Viton o-ring is a practical, cost-effective choice because of its proven chemical resistance and measured dimensions. It represents good value when durability and temperature tolerance are the priorities, though users needing very soft or food-grade seals should consider alternatives.

Frequently Asked Questions

Is this o-ring compatible with fuel and biodiesel?
Yes. The Viton formulation is specified to perform well with petroleum, diesel and blends including biodiesel and methanol blends.

Will the 90A hardness seal high-temperature equipment?
Yes. The o-ring is rated to 232C (450F), suitable for many high-temperature sealing points.

Are the listed sizes exact fit dimensions?
The product lists both nominal and actual measured dimensions (for example actual ID 15.475in), which helps confirm fit before installation.