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 4140-01-264-4952
NSN 5895-00-856-3081
NSN 5835-01-160-7282
NSN 6220-01-066-5529
NSN 6685-00-895-0313
NSN 7035-01-016-4587
NSN 4140-01-616-7340
NSN 6645-01-394-5149
NSN 5925-00-549-6437
NSN 6650-00-690-8709
NSN 2925-01-329-3665
NSN 6145-00-188-3657