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 6645-01-093-3675
NSN 5915-00-951-0963
NSN 5895-01-096-0257
NSN 6135-00-269-5843
NSN 6685-01-566-0393
NSN 6145-01-609-9715
NSN 6620-01-432-7032
NSN 5950-01-384-7845
NSN 5910-01-026-4935
NSN 5996-00-278-5193
NSN 5975-01-303-2166
NSN 5998-01-025-0499