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 5975-00-497-7899
NSN 6645-01-370-5264
NSN 6220-01-450-3264
NSN 5835-00-644-4512
NSN 5985-00-287-7309
NSN 5975-01-350-3425
NSN 5905-00-471-3041
NSN 6610-00-323-8175
NSN 6150-00-271-0520
NSN 5855-00-405-4532
NSN 6685-01-139-3729
NSN 2925-01-394-9658