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 2925-00-436-9837
NSN 6320-00-468-8421
NSN 6150-01-067-0670
NSN 6610-00-915-3215
NSN 6320-01-072-2073
NSN 6610-01-633-8931
NSN 5975-01-409-2948
NSN 6220-00-757-5115
NSN 5905-01-054-1218
NSN 6620-00-062-9722
NSN 5855-00-179-8588
NSN 6110-00-829-1052