O-Rings (Kalrez®, Viton®, Buna-N, EPDM)

Name: Plastics Fabricating and Machining
Address: 2945 South Fourth St, Beaumont, TX, 77701, US
Telephone: (409) 832-4005

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O-Rings

When a seal has to work every time—under pressure, heat, chemicals, or constant cycling—the right O-ring material matters. Plastics Fabricating & Machining supplies durable O-rings in high-demand materials like Kalrez® (FFKM), Viton® (FKM), Buna-N (NBR), and EPDM, helping customers get the best balance of compatibility, lifespan, and cost.

Whether you need standard sizes for maintenance or specialty materials for harsh chemical service, we can help you match the correct compound and get it delivered fast.

What Are O-Rings?

O-rings are circular sealing rings used to prevent leaks between two mating surfaces. They’re used in both static seals (no movement) and dynamic seals (movement, vibration, cycling) across nearly every industry—because they’re simple, effective, and versatile when chosen correctly.

Common O-Ring Applications

We supply O-rings used in:

Pumps and pump housings
Valves and valve stems
Hydraulic and pneumatic systems
Flanges and fittings
Heat exchangers and process skids
Tanks, manifolds, and chemical transfer equipment
OEM components and maintenance kits

Sizes, Standards & Availability

We can support:

Standard O-ring sizes (common industrial sizing)
Material upgrades for longer life in tough environments
O-rings for maintenance shutdowns and recurring programs
Small-quantity orders and repeat production needs

If you have a part number, size callout, or kit list, send it over—we’ll quote quickly.

What We Need to Quote Fast

Any of the following helps:

O-ring size (ID x CS) or standard size reference
Material requirement (Kalrez / Viton / Buna / EPDM)
Quantity needed
Service details (media/chemical, temperature, pressure)
Application type: static vs. dynamic

If you don’t have sizing, a clear photo plus the groove dimensions (or the old O-ring) can help.

O-Ring Materials We Supply (and When to Use Them)

Kalrez® (FFKM)

Premium performance for the harshest environments.

Exceptional chemical resistance
Excellent high-temperature capability
Ideal for aggressive chemical processing and critical sealing points
Often selected when downtime is expensive and failures aren’t acceptable

Viton® (FKM)

High-performance option for many industrial fluids and elevated temperatures.

Strong resistance to many oils, fuels, and chemicals
Good high-temperature performance
Common choice in process industries and demanding maintenance applications

Buna-N (NBR)

Reliable, cost-effective, and widely used.

Great for many oils and hydraulic fluids
Popular for general industrial sealing
Often used when chemical exposure is limited and cost control matters

EPDM

Excellent for water/steam and outdoor exposure (when compatible).

Strong resistance to water, steam, and weathering
Often used in water-related systems and some chemical applications
Not ideal for many petroleum-based oils/fuels (we can guide you)

Not sure which material you need? Tell us what you’re sealing (fluid/media), your temperature range, and whether it’s a static or dynamic seal—we’ll recommend the best match.

Why Plastics Fabricating & Machining

Industrial sealing expertise (material compatibility matters)
Fast response for maintenance and downtime situations
Access to both standard and high-performance materials
One source for O-rings, gaskets, PTFE/ePTFE, graphite, and machined plastics

Have Question ?

Frequently Asked Questions

What’s the difference between Kalrez and Viton?

Kalrez (FFKM) is a premium material for extreme chemical and high-temperature environments. Viton (FKM) is a high-performance choice for many industrial fluids and elevated temperatures, usually at a lower cost than Kalrez.

Can you help me choose the right O-ring material?

Yes. Tell us the media/chemical, temperature range, pressure, and whether the seal is static or dynamic.

Do you stock standard sizes?

We can supply many standard sizes and can often source specialty materials quickly depending on size and compound.

What information do you need if I don’t know the size?

If possible, send the old O-ring or provide the groove dimensions (diameter and cross-section). Photos help too.

Contact Form

Call Us Or Fill The Form

(409) 832-4005

Don't hesitate to contact us!

Office Location

2945 South Fourth St. Beaumont, Texas 77701

Email Us

hector@plasticsfm.com