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 5835-01-087-3960
NSN 6150-00-371-4620
NSN 6685-01-325-6756
NSN 6105-01-025-8568
NSN 6130-01-660-3141
NSN 5960-00-070-4399
NSN 6130-00-296-8697
NSN 5975-01-241-9230
NSN 5965-00-201-7479
NSN 6645-01-607-7931
NSN 6240-01-103-9554
NSN 7035-00-392-5417