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 2925-01-508-4138
NSN 5925-01-480-6701
NSN 5999-00-874-2103
NSN 5925-01-046-3290
NSN 6130-01-167-8911
NSN 5975-01-162-6221
NSN 5835-01-186-4961
NSN 6150-01-634-0575
NSN 5965-01-060-2558
NSN 6650-01-648-9915
NSN 6240-01-484-6712
NSN 5895-01-308-3591