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Continuously Molded O-Rings

Continuously Molded O-Rings for Large Sealing Applications at the Highest Quality Level

Are you needing a molded O-Ring that is greater than 200mm inside diameter? You need it in a week? Just give us a call or email us a price request and we will take care of you. We make getting o-rings easy!! 

Please click this link to Request a Price Quote.

Large O-Rings have historically either been produced as extruded and Vulcanized O-Rings, or as custom O-Rings molded within a serpentine tool. O-Rings made from O-Ring Cord stock have a weak spot at their splice point, and serpentine mold produced O-rings have expensive tooling, and produce mixed performance results. The Continuously Molded O-Rings manufactured for The O-Ring Store LLC are recommended for use in any large diameter O-Ring groove where vulcanized or serpentine o-rings would present reliability issues.

Typical applications are large chambers, vessels, lids, doors, containers, vacuum, high-pressure and specialty semi-dynamic applications.  These O-Rings feature consistent properties throughout the diameter of the ring, and reduced potential for contamination through a spliced joint.

These are the advantages of our production system:

  • No Internal Diameter dimensional limits (200mm min.)
  • No molding costs
  • No minimum quantity for purchase order
  • Mechanical performances comparable to traditional system made O-Rings (compression and injection molding)
  • Competitive prices
  • Fast deliveries - manufactured and shiped is as quick as 7-10 days
  • O-Rings customization  

*Min 200mm ID and 2.62mm cross section

We started as a simple online company taking care of a precious few people. Our circle of business friends has grown over the years and taking care of them is more satisfying than ever. We take care of our customers' Standard O-Rings, Metric O-Rings, Vulcanized O-Rings, and Custom O-Rings. Just place your O-Ring order online and we will take care of you too.

We are a family owned and operated Distributor and Manufacturer of O-Rings, O-Ring Kits, OSK™ O-Ring Service Kits, Hydraulic Seals, Adhesives, Lubricants, Braided Packings, Coatings, O-Ring Cord, Lathe Cut, Oil and Shaft Seals, Gaskets, Retaining Rings, Molded Packings, Seals, and Molded Rubber Products.

We serve many industries, including manufacturing, chemical processing, defense, power generation, agricultural, water treatment and filtration, hydraulics, fluid power, heavy truck, automotive, aerospace, oil and gas, medical and life sciences, food and beverage, electronics and industrial controls, refineries, and supply chain suppliers. Each industry and each customer have unique requirements that make them special. We love sharing customer stories and applications at our weekly store meeting.