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 5895-01-548-1253
NSN 6610-00-007-6832
NSN 7035-01-435-4009
NSN 5925-00-778-9033
NSN 6150-01-459-7366
NSN 5999-01-316-8554
NSN 6135-01-548-1423
NSN 5910-00-024-0931
NSN 6650-00-299-9681
NSN 5985-01-055-3261
NSN 6685-00-281-9148
NSN 5975-01-234-9653