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 5925-01-182-4747
NSN 5990-01-647-8574
NSN 5905-01-149-9350
NSN 6135-00-715-4001
NSN 5999-01-371-2185
NSN 5996-01-116-3404
NSN 5975-01-048-0474
NSN 5925-00-911-8807
NSN 7035-01-115-8996
NSN 5965-00-243-7782
NSN 5996-00-899-0486
NSN 5915-00-344-7480