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 5999-01-076-9815
NSN 6240-01-030-8788
NSN 5925-01-354-7130
NSN 6150-01-381-1850
NSN 6135-01-282-4326
NSN 5905-00-097-9536
NSN 5998-01-415-3841
NSN 6135-01-265-1384
NSN 6685-00-144-6362
NSN 6320-00-977-3930
NSN 6645-01-128-9353
NSN 5985-00-156-5837