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 6650-01-555-8049
NSN 6135-00-497-0491
NSN 5960-00-241-2911
NSN 6130-00-246-5638
NSN 5960-01-472-5263
NSN 5925-01-076-6378
NSN 2925-01-143-0092
NSN 5835-01-090-0784
NSN 6320-01-123-2476
NSN 4140-00-192-3811
NSN 6685-00-480-1711
NSN 5975-01-414-4620