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 2925-01-519-6726
NSN 5910-01-106-1692
NSN 5965-00-928-4854
NSN 5999-01-463-2867
NSN 6150-00-518-4558
NSN 5935-00-221-5825
NSN 6150-01-185-5334
NSN 6685-01-584-4183
NSN 4140-01-181-4485
NSN 5950-01-627-3863
NSN 5915-01-010-6923
NSN 6105-01-158-0117