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 5935-01-587-7710
NSN 6145-01-415-1263
NSN 6645-00-816-5337
NSN 5855-01-338-1718
NSN 6130-00-025-9448
NSN 6145-01-118-6835
NSN 5835-01-481-4204
NSN 6110-01-125-9723
NSN 2925-00-749-8893
NSN 5975-01-519-2519
NSN 5960-00-654-7300
NSN 6685-00-302-7904