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 5855-01-358-2803
NSN 5975-01-092-3050
NSN 6685-00-415-4685
NSN 6240-01-400-4212
NSN 6240-01-379-8472
NSN 6105-00-344-3251
NSN 6130-01-413-3343
NSN 6685-01-587-8980
NSN 5905-00-816-9079
NSN 6145-01-111-3626
NSN 2925-01-302-7185
NSN 6110-01-235-9108