A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 6135-01-351-2690
NSN 6150-01-075-6558
NSN 5835-00-275-0584
NSN 6135-01-168-2944
NSN 6320-01-116-3980
NSN 6145-01-511-0024
NSN 6645-00-456-0080
NSN 5930-01-263-8606
NSN 5985-00-113-5058
NSN 6145-01-509-4057
NSN 5985-01-061-4944
NSN 5975-01-483-2882