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 6685-01-313-4499
NSN 6320-00-343-1798
NSN 6220-00-041-0083
NSN 6105-01-514-2294
NSN 5960-01-184-3436
NSN 5965-00-275-0491
NSN 5965-00-554-4138
NSN 6135-01-438-4320
NSN 5996-01-410-8292
NSN 5920-00-413-3341
NSN 6645-01-076-4655
NSN 5999-01-435-4381