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 6645-01-296-0882
NSN 5895-01-291-6013
NSN 2925-00-078-0525
NSN 5925-01-356-6161
NSN 5975-01-606-2785
NSN 5985-00-350-2173
NSN 5835-01-009-2417
NSN 6685-00-659-7831
NSN 6220-00-312-2007
NSN 6685-01-630-2750
NSN 6130-00-942-7829
NSN 5925-01-506-0095