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 2925-01-525-8212
NSN 6645-01-584-0892
NSN 2925-00-485-0543
NSN 6645-01-366-5033
NSN 5990-01-110-4841
NSN 5965-00-554-4138
NSN 5835-01-100-3265
NSN 6650-01-061-8203
NSN 6145-01-137-4008
NSN 5930-01-003-9174
NSN 6320-01-399-1633
NSN 5998-00-349-8084