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 5996-00-348-3844
NSN 5925-00-330-8778
NSN 5855-00-631-4565
NSN 6220-01-574-9370
NSN 2925-00-163-9016
NSN 5998-00-160-6485
NSN 6130-00-292-5058
NSN 5999-01-090-4528
NSN 5998-01-296-1099
NSN 6685-01-263-3552
NSN 5960-01-599-9821
NSN 6150-00-288-6245