M3x110 Viton O-Ring 75A Durometer, 110 mm ID - Reliable Chemical Seal

In this review the M3x110 Viton O-Ring is evaluated for installers and technicians who need a durable, chemical-resistant seal. The bottom line: this pack of ten O-rings is best for users who require a compact, heat- and fuel-resistant round seal for threaded or cylindrical overlaps, with the single biggest reason to buy being its material performance-Viton delivers reliable resistance to a broad range of fuels and aromatic or aliphatic hydrocarbons. The review focuses on fit, material hardness, temperature capability, and common workshop uses.

Key Features

• Material: Made from Viton fluorocarbon elastomer, it offers strong resistance to fuels and many chemicals commonly encountered in maintenance and industrial settings.
• Durometer: The 75A hardness balances flexibility and compression set resistance for dependable sealing under repeated assembly and disassembly.
• Temperature range: Rated for a wide temperature span, it handles many hot and cold environments without rapid degradation.
• Shape and sizing: The round cross-section with a 110 mm ID and 116 mm OD provides a predictable seal for cylindrical overlaps and threaded protectors.
• Pack quantity: Supplied as a pack of ten, it is practical for multiple repairs or preventive replacement schedules.

Who It's For

This O-ring is aimed at mechanics, plumbers, and hobbyists who work with non-flammable hydraulic fluids, silicone oils, and hydrocarbon fuels where a resilient fluorocarbon seal is needed. It is especially useful for applications like threaded barrel protection, carburetor seat seals, and general-purpose sealing where fit and chemical resistance matter.

Those who should look elsewhere include users needing compatibility with strong alkalis, amines, ammonia gas, or glycol-based brake fluids, as Viton is vulnerable to those substances; also select stainless or metal gasket solutions may be preferable for extreme mechanical wear rather than elastomeric seals.

Pros & Cons

Pros

• Good chemical and fuel resistance makes it suitable for many maintenance and industrial sealing tasks.
• 75A durometer provides a reliable balance of flexibility and durability for repeated use.
• Pack of ten offers value for workshops and repeat maintenance.
• Customers report a precise fit for certain threaded barrels and carburetor seats, improving seal quality and thread protection.

Cons

• Viton is not compatible with some chemicals such as low molecular weight organic acids, ammonia, amines, and certain brake fluids, so it is not universal.
• Elastomeric seals may not suit applications requiring extreme abrasion resistance or continuous exposure to super-heated steam.

Specifications

Our Verdict

The M3x110 Viton O-Ring is a sensible purchase for technicians needing a compact, chemically resistant seal for threaded barrels and cylindrical interfaces; its 75A hardness and Viton composition provide durable performance and good value in a pack of ten. Buyers should confirm chemical compatibility for their fluids before choosing Viton, but for most fuel and hydrocarbon applications this O-ring is a practical, cost-effective option.

Frequently Asked Questions

Is this O-ring compatible with gasoline and diesel?
Yes, Viton is compatible with many fuels, including aromatic and aliphatic hydrocarbons, making it suitable for gasoline and diesel exposure in typical sealing roles.

Will this size fit threaded barrel protectors?
Customers report it fits many 10 mm auto threaded barrels and similar threaded protectors, but measuring the ID and cross-section against your part is recommended.

Can it be used at high temperatures?
The specified temperature capability covers common high-temperature uses up to about 400 degrees F (205 degrees C), which is adequate for many engine and industrial applications.