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 5945-01-196-6030
NSN 5985-01-471-9432
NSN 5915-01-159-0117
NSN 5925-00-284-3726
NSN 7035-00-849-5526
NSN 5990-00-022-8146
NSN 5835-00-814-1359
NSN 5945-00-732-5763
NSN 5905-01-122-7556
NSN 6685-00-869-9276
NSN 5930-00-489-0708
NSN 6220-00-086-5156