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 2925-00-942-2417
NSN 5960-01-007-6811
NSN 5905-01-511-6605
NSN 5996-01-296-2515
NSN 6320-01-296-3181
NSN 6145-00-150-5049
NSN 7035-01-504-3462
NSN 5905-00-918-9636
NSN 5925-01-076-1429
NSN 5999-01-645-4854
NSN 6650-01-429-6692
NSN 6685-00-988-7053