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 5996-00-190-8895
NSN 6240-01-072-9652
NSN 6150-01-377-0520
NSN 6110-01-415-2326
NSN 5975-01-242-3617
NSN 5925-01-532-5354
NSN 5920-01-605-0214
NSN 5965-01-593-2740
NSN 5925-00-513-7610
NSN 5905-01-399-4051
NSN 6645-01-248-3123
NSN 5950-01-422-2924