Mr O-Ring 6X470 Metric Viton O-Ring 75A Durometer - Durable Seal

In this review the Mr O-Ring 6X470 Metric Viton O-Ring is examined for technicians, maintenance staff and hobbyists who need a reliable large-diameter seal. The bottom line: this single pack Viton o-ring stands out for its wide operating temperature range and chemical resistance, making it a practical choice where heat, fuels or oils are present. The reviewer found it to be well sized to the metric dimensions and built to endure demanding sealing tasks without the rapid degradation common to lower-grade elastomers.

Key Features

• Material: Made from 75A durometer Viton (FKM) which provides strong resistance to high temperature and many chemicals, extending service life in harsh environments.
• Temperature range: Rated from -26C (-15F) to 232C (450F), which lets the o-ring function across cold starts and sustained high-temperature applications.
• Size accuracy: Metric dimensions 470 mm ID, 482 mm OD and 6 mm cross-section match common replacement needs for large sealing grooves and flanges.
• Chemical compatibility: Performs well with petroleum products, gasoline blends, diesel and biodiesel, mineral oils, silicone oils and many organic solvents, reducing unexpected failures.
• Shelf-life: Described with unlimited shelf-life for practical spare-parts storage when kept under appropriate conditions.
• Versatility: Suitable for high vacuum, ozone and weather exposure so it can be used outdoors or in industrial tooling with confidence.

Who It's For

The Mr O-Ring 6X470 is aimed at industrial maintenance technicians, HVAC and hydraulic specialists, and marine or automotive repair shops that require a large, robust sealing ring resistant to fuels and high temperature. Its metric sizing makes it suitable for equipment sourced or specified in metric dimensions.

Users seeking soft rubber seals for low-temperature flexibility or who need an exact match to imperial sizing should look elsewhere; similarly, those who need bulk quantities rather than a single pack should consider other purchasing options.

Pros & Cons

Pros

• Excellent high-temperature and chemical resistance due to the Viton FKM composition.
• Accurate metric sizing (470 mm ID, 482 mm OD, 6 mm CS) reduces fitment guesswork for metric equipment.
• Wide operational range makes it useful across diverse sealing tasks, including fuel and oil contact.
• Durable 75A durometer hardness balances compression resistance with sealing conformity.

Cons

• Sold as a single pack which may not suit projects that require multiple o-rings or stock spares.
• For extremely low-temperature applications below -26C (-15F), other elastomers remain preferable.

Specifications

Brand	Mr O-Ring
Material	Viton (FKM), 75A durometer
Metric dimensions	470 mm ID, 482 mm OD, 6 mm CS
Actual imperial dimensions	18.504 in ID, 18.976 in OD, 0.236 in CS
Temperature range	-26C (-15F) to 232C (450F)
Pack quantity	1 o-ring

Our Verdict

The Mr O-Ring 6X470 is a solid, no-frills replacement o-ring for anyone needing a large, heat- and chemical-resistant seal. It offers dependable metric sizing and the advantages of 75A Viton without unnecessary extras, making it good value for maintenance work where durability matters.

Frequently Asked Questions

Is this o-ring suitable for fuel applications?
Yes. The Viton FKM formulation resists petroleum products, gasoline blends and diesel, making it appropriate for fuel-contact sealing.

What temperatures can it handle?
The specified operating range is -26C (-15F) up to 232C (450F), covering most industrial and automotive needs.

Does the pack include more than one o-ring?
No. This listing is for a single o-ring, so buy quantities accordingly for multiple replacements.