Large O-Rings

Large Diameter O-Rings


Using an innovative production system based on a conventional compression-step molding process, North Coast Seal is able to provide our customers with large- scale O-rings that do not require joints, vulcanization or glue! This molding system guarantees the highest mechanical properties because the process is controlled by manipulators and specially developed software. This allows us to produce high-quality, high-performance O-rings at competitive prices and at any size you need.

Simply choose from our available cross sections (starting at 2.62 mm up to 40 mm), calculate the diameter you need, and we’ll produce the O-ring according to your specifications! Our large diameter O-rings are perfect for special plants, large machinery/equipment, non-standard applications, and more.


Large Diameter O-ring Features

✔ Large Dimensions
✔ Competitive Pricing
✔ No Cost for the Molds

✔ No Minimum Quantity
✔ Express Delivery
✔ Personalized, Custom O-Rings

Large Diameter O-Ring Materials

✔ Buna-N (Nitrile)
✔ Viton®∆ (Fluorocarbon)
✔ Silicone
✔ EPDM (Ethylene Propylene)
✔ Chemraz®§
✔ Kalrez®*
✔ Simriz®†
✔ Teflon® (PTFE)
✔ Neoprene*
✔ Natural Rubber

* DuPont Performance Elastomers | § Product of Green Tweed

† Product of Simrit | ‡ Product of ACG Chemicals | ∆ Product of Chemours Company


✔ Hydrogenated Nitrile Rubber ✔ (HNBR)
✔ Aflas®‡
✔ Carboxylated Nitrile
✔ Hypalon® *
✔ Santoprene
✔ Geolast® (Advanced Elastomer System)
✔ Polyurethane
✔ Rubber Urethane

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NCS Will Meet Your Large O-Ring Needs

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