AS568-112 FFKM Perfluoroelastomer O-Ring, 75A Durometer, 1/2" ID x 3/32" CS (0.487" x 0.103" Actual) - Precision-Molded Replacement Sealing Ring

FINAL SALE - NO RETURNS. THIS IS A STANDARD CATALOGUE SIZE; CONFIRM YOUR DIMENSIONS AND MATERIAL BEFORE ORDERING.

Because standard sizes are chosen by measurement rather than by machine model, they ship as final sale. If we send the wrong item, or it arrives damaged or defective, we replace it free of charge, and that never changes.

Chasing a leak, a slow drip or a pressure loss you cannot track down? A flattened, hardened or wrong-size o-ring lets fluid weep past the joint, drops pressure, and can damage the parts around it.

This Beaver Island Parts Company o-ring is a standard AS568-112 12.37mm ID x 2.62mm CS (0.487" x 0.103") size, molded in 75A FFKM Perfluoroelastomer. Its outside diameter is 17.61mm (0.693").

Specifications

What It Fits

This size is used across chemical processing pumps and valves, semiconductor tools, analytical instruments and high-temperature process equipment. If your manual, parts list or old ring calls for AS568-112 12.37mm ID x 2.62mm CS (0.487" x 0.103"), this is the part.

Why FFKM Perfluoroelastomer

FFKM is the top tier of elastomer sealing, specified where nothing else survives the chemistry or the temperature. Recommended for nearly all chemicals, solvents, acids, bases, steam and extreme heat. Not recommended for molten alkali metals and some fluorinated solvents.

You Can Do This Repair

Clean the groove and mating surfaces and check them for nicks or burrs. Lubricate the new o-ring, then roll it into the groove without twisting it; pass it over threads or sharp edges on a piece of tape or a plastic sleeve so it is not cut. Tighten to the normal torque. A correct o-ring seals by squeeze, so more torque is not better.

Pro Tip: A thin coat of Aqua Flex silicone lubricant eases installation, protects the seal on first start-up and extends its life.

Shipping: This part is special-ordered and packed for you. It ships from our facility in about 10 business days, then transits by the carrier service you choose at checkout. The estimated delivery date shown on this page includes that lead time.

Why Buy From Beaver Island Parts Company

• Every dimension published. Size, material, hardness and temperature rating are listed up front so you can confirm fit before you buy, not after.
• Inspected, packed and labeled by us. Each order is checked and repacked in a bag labeled with the part's size and material, so it never gets lost in a parts bin.
• Real people who answer fitment questions. We are an American family-owned and operated small business. Send us your measurements or model number and we will help you confirm the right part.
• Replacement guarantee. If we ship the wrong item, or it arrives damaged or defective, we replace it free of charge.

Frequently Asked Questions

Q: Will this fit my equipment?
A: It fits any groove or fitting that calls for a AS568-112 12.37mm ID x 2.62mm CS (0.487" x 0.103") o-ring. Size, not brand, determines fit for standard o-rings. Measure the old o-ring's inside diameter and cross-section with calipers, or better, measure the groove, because a used ring stretches and flattens. Match the material to the fluid: the right size in the wrong rubber will still fail.

Q: What is FFKM Perfluoroelastomer good for?
A: It is suited to nearly all chemicals, solvents, acids, bases, steam and extreme heat. Avoid molten alkali metals and some fluorinated solvents.

Q: Can I install it myself?
A: Yes. Most o-ring replacements take only a pick tool, a clean rag and lubricant. Release pressure, drain the system if needed, remove the old ring, and follow the installation notes above. If it is your first time, take a photo before you take anything apart.

Q: When will it ship?
A: It ships from our facility in about 10 business days, then transits by the carrier service you choose.