MicrOring(TM)seals from Apple Rubber Products are a collection of small seals in more than 2,000 sizes. The largest seal has an inside diameter of 1.0 mm. The smallest seal has an inside diameter of 0.2 mm. Rings are available in a range of materials, including Buna-N, silicone, fluorosilicone, and Neoprene. The company also custom-engineers products that incorporate seals with another component into a single piece.
Vesta Inc. manufactures custom silicone gaskets and seals for needle guides, hemaseals, compression rails, marker rings, and other medical devices. Molded and extruded silicone products are cut to tolerances down to 0.015 inch. The company's services include cutting channels and custom profiles into silicone products as well as conceptual assistance in designing seals.
O-Seal system valves and fittings from CPV Manufacturing are rated for heavy-duty liquid and gas service. The O-Seal design allows easy change-out of valves with the turn of a union nut. Users can also install, rotate, and reposition pipe sections or valves without cutting the line. Flat-face fittings are joined with a resilient O-ring in a close tolerance groove.
O-rings and seals from Parker-Hannifin are designed for hydraulic and pneumatic applications in aerospace, automotive, chemical processing, medical, semiconductor, and other industries. The company offers a free CD-ROM that helps engineers design application-specific glands based on requirements of MIL, SAE, and other standards. The software cross-references thousands of the company's part numbers.