M1x14 Viton O-Ring 14 mm ID 75A - Pack of 100 Mr O-Rings

In this review the M1x14 Viton O-Ring is evaluated for workshop and field sealing tasks where chemical and heat resistance matter. The bottom line: this pack of 100 small black Viton O-rings is best for technicians and hobbyists who need reliable seals for threaded barrels, carburetor seats, and similar cylindrical overlaps because its fluorocarbon construction and 75A durometer combine chemical compatibility with enough hardness to hold thread protectors and maintain a dependable seal under temperature stress.

Key Features

• Material: Made from Viton fluorocarbon elastomer, these O-rings resist fuels, oils and many chemicals for longer service life in adverse media.
• Temperature range: Rated to tolerate a wide span of temperatures, making them useful for hot engine areas and cold storage down to -15 degrees F.
• Durometer 75A: The medium-hard 75A hardness balances flexibility and compression resistance so the ring seals without extruding under moderate pressure.
• Size consistency: The 14 mm inside diameter and 16 mm outside diameter provide a predictable fit for small threaded barrels and carburetor seats that users commonly reported.
• Round cross-section: A classic round profile creates a continuous seal between overlapping cylindrical surfaces for axial or radial sealing tasks.

Who It's For

This product is aimed at mechanics, gunsmiths, small-engine technicians and DIYers who need a bulk supply of reliable small O-rings for maintenance and repairs. It is especially useful when working with non-flammable hydraulic fuels, silicone oils, aromatic and aliphatic hydrocarbons where Viton compatibility is a priority.

Those who should look elsewhere include users who need compatibility with strong alkalis, ammonia gas or glycol-based brake fluids, since Viton is vulnerable to those media, and projects that require a much softer or much harder durometer than 75A for extreme extrusion or compression set resistance.

Pros & Cons

Pros

• Good chemical and fuel resistance thanks to the Viton material, extending seal life in contact with oils and hydrocarbons.
• Customers report reliable fit and function for threaded barrels and carburetor seat seals, showing practical compatibility with common parts.
• Bulk pack of 100 offers strong value for routine maintenance and repeated replacements.

Cons

• Viton is not compatible with certain media like strong alkalis, ammonia gas, or glycol-based brake fluids, so it is not universal for all chemical environments.

Specifications

Material	Viton (fluorocarbon elastomer)
Color	Black
Durometer (hardness)	75A
Inside diameter (ID)	14 mm
Outside diameter (OD)	16 mm
Cross-section	Round
Pack quantity	100 pieces

Our Verdict

The M1x14 Viton O-Ring pack is a practical, cost-effective choice for professionals and hobbyists needing a durable 14 mm seal that stands up to heat and common hydrocarbon fuels. Its 75A hardness and Viton composition make it a good value for routine maintenance where chemical resistance is required, provided the working fluids do not include media that degrade Viton.

Frequently Asked Questions

Are these O-rings compatible with gasoline and diesel?
Yes, Viton is compatible with many fuels and hydrocarbons, so these O-rings work well with gasoline and diesel where fluorocarbon resistance is acceptable.

Will the 14 mm ID fit threaded barrels and carburetor seats?
Customers report good fit on common 14 mm and 10 mm auto threaded barrels and specific carburetor seat applications, making them suitable for those uses.

Can these O-rings be used with brake fluid?
No, Viton is vulnerable to glycol-based brake fluids, so choose a different material for brake system seals.