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 6135-00-715-4001
NSN 6685-00-532-8924
NSN 5960-00-712-8243
NSN 5835-01-371-6482
NSN 5905-00-729-5004
NSN 5895-01-134-7460
NSN 6150-01-010-9456
NSN 7035-01-107-2811
NSN 6145-01-371-2916
NSN 6130-01-435-9241
NSN 6105-00-938-6032
NSN 6110-01-355-8083