OSK™ Industrial Metric O-Ring Kit - 500-Piece Viton® Fluorocarbon FKM 75 Duro 36 Metric Sizes for High-Temperature and Chemical-Resistant Applications

OSK™ Industrial Metric O-Ring Kit K500X36F75 is a 500-piece metric Viton® Fluorocarbon FKM O-Ring assortment with 36 common metric sizes. This kit is made for maintenance shops, repair teams, service trucks, and industrial users who need hard-to-find metric Viton® FKM O-Rings for higher heat, fuel, oil, ozone, weather, and chemical-resistant sealing applications. The blue case helps protect the O-Rings from sun exposure while keeping sizes organized and ready for faster repairs.

Benefits

The OSK™ Industrial Metric Viton® FKM O-Ring Kit helps shops keep repairs moving when a standard Buna-N kit is not enough.

• Saves time by keeping common metric Viton® FKM O-Rings on hand
• Helps reduce downtime during equipment repair and maintenance
• Supports high-temperature and chemical-resistant sealing needs
• Reduces extra trips to the parts counter
• Helps repair teams finish more jobs with less frustration
• Provides organized metric sizes that are often harder to find
• Helps customers avoid guessing between SAE and metric O-Rings

This kit is not just a box of rubber O-Rings. It is a repair tool that helps your team find the right metric size faster, make better seal replacements, and keep equipment running.

Correct Size Coverage

This kit includes 500 total O-Rings in 36 metric sizes. Sizes are listed by inside diameter and cross section.

SAE, Metric, or Specialty Kit Type

This is a metric O-Ring assortment kit. It is not an AS568 SAE kit.

The sizes are metric inside diameter and metric cross section sizes. This makes the kit a strong choice for imported equipment, metric fittings, metric pumps, metric valves, and maintenance work where SAE O-Rings are close but not correct.

Material Compatibility

The O-Rings in this kit are 75 Durometer Viton® Fluorocarbon FKM. Viton® FKM is often chosen when Buna-N does not provide enough heat or chemical resistance.

Viton® Fluorocarbon FKM is commonly used with:

• Petroleum oils
• Mineral oils and grease
• Petroleum-based hydraulic oil
• Fuels and gasoline
• Diesel oil
• LPG, propane, and natural gas
• Many hydrocarbons
• Silicone oil and grease
• High vacuum
• Ozone, weather, and aging exposure

Viton® FKM is not recommended for every fluid. Avoid using this kit with:

• Glycol-based brake fluids
• Brake fluid
• Ammonia gas
• Amines and some alkalis
• Acetone
• Superheated steam
• Low molecular organic acids, such as formic acid and acetic acid
• Skydrol 500
• Methyl ethyl ketone

Operating temperature: -20°F to +400°F.

For critical applications, always confirm the required material, temperature range, pressure, chemical exposure, and any certification or traceability requirements before use.

Durometer and Seal Performance

These O-Rings are 75 Duro Viton® FKM.

Durometer means hardness. A 75 Duro Viton® O-Ring is slightly harder than a common 70 Duro general-purpose O-Ring. This can help in applications where the seal needs better shape control, improved compression set resistance, and better performance in heat or chemical exposure.

Durometer matters because it affects:

• How the O-Ring compresses
• How it seals under pressure
• How well it resists wear and extrusion
• How long the seal may last in the right application

Best Uses

This kit is a good fit for:

• Maintenance shops
• Hydraulic repair shops
• Service trucks
• Manufacturing maintenance teams
• Farm and equipment repair
• Automotive and fuel system repair when Viton® FKM is compatible
• Metric pump and valve repair
• Industrial equipment repair
• OEM maintenance areas
• Field repair kits
• Shops that need common but hard-to-find metric Viton® O-Rings

This kit is not ideal for unknown chemicals, critical aerospace, medical, or highly specified applications unless the material, certification, and traceability requirements are confirmed.

Quality and Reliability

The OSK™ Industrial Metric Viton® FKM O-Ring Kit is built as a professional repair and maintenance solution. It gives the customer known material, known hardness, useful metric sizes, and organized storage.

A better O-Ring kit helps reduce:

• Wrong-size repairs
• Wasted time searching for parts
• Repeat failures from using the wrong material
• Downtime caused by missing common sizes

The O-Ring Store LLC is ISO9001:2015 certified, and this kit supports the same practical focus we use every day: correct sizes, reliable materials, clear information, and support when customers need help choosing the right seal.

Organized Storage Case

This kit comes in a blue 36-compartment storage case.

The blue case helps protect the Viton® FKM O-Rings from sun exposure better than a clear case. It also keeps the sizes separated so the user can find the right O-Ring faster during a repair.

The organized layout helps shops:

• Identify sizes faster
• Keep parts separated
• Store the kit in a service truck or shop cabinet
• Know when a compartment is running low
• Refill only the sizes they use most

Piece Count and Refill Value

This kit includes 500 total O-Rings across 36 metric sizes.

The value is not just the total piece count. The value is having useful metric Viton® FKM sizes in the right quantities for real repair work.

When a compartment runs low, customers can reorder replacement O-Rings from The O-Ring Store LLC. That means the customer does not need to replace the whole kit just because the most-used sizes are gone first.

Price and Buying Value

This kit is a smart shop purchase because it helps reduce downtime and keeps repairs moving. One missing metric Viton® FKM O-Ring can stop a machine, delay a service call, or force another trip to the parts counter.

The value comes from:

• Faster repair work
• Better size organization
• Fewer emergency supply runs
• Better material choice for heat and chemical exposure
• Refillable compartments
• Support from a team that works with O-Rings every day

It is more than an O-Ring assortment. It is a time-saving tool for shops that need dependable metric Viton® seal coverage.

Before You Buy

Before ordering, make sure this kit matches your repair needs.

• Match the O-Ring size to the gland or original O-Ring
• Confirm the inside diameter and cross section
• Confirm that the application requires metric sizes, not AS568 SAE sizes
• Match Viton® FKM to the fluid, temperature, pressure, and environment
• Do not assume all rubber materials work in every fluid
• For critical applications, confirm material, hardness, certification, and traceability before use

Why Buy From The O-Ring Store LLC

The O-Ring Store LLC is an ISO9001:2015 certified O-Ring and seal distributor. We make getting O-Rings easy.

Customers get more than a kit. They get clear sizing, practical product information, refill options, and support from a team that works with O-Rings and seals every day.

The value is speed, accuracy, service, and the ability to keep the kit working over time. That helps customers reduce downtime, order with more confidence, and keep common repair sizes ready when they need them.

FAQ

What is this O-Ring kit used for?
This kit is used for metric repair and maintenance applications that need Viton® FKM O-Rings for heat, fuel, oil, ozone, weather, and chemical resistance.

Is this kit SAE or metric?
This is a metric O-Ring kit. It includes 36 metric sizes and is not an AS568 SAE assortment.

What material are the O-Rings?
The O-Rings are black Viton® Fluorocarbon FKM, 75 Duro.

Can I use this kit with hydraulic oil?
Viton® FKM is commonly used with petroleum-based hydraulic oil. Always confirm compatibility with the exact fluid, temperature, and pressure before use.

Can I refill the kit?
Yes. When a compartment runs low, replacement O-Rings can be ordered from The O-Ring Store LLC.

What is the temperature range?
The listed operating temperature range is -20°F to +400°F.