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 6610-01-396-5628
NSN 6220-01-647-6986
NSN 5855-01-537-1162
NSN 6150-01-584-2762
NSN 2925-01-661-1793
NSN 6105-01-589-3545
NSN 5935-01-604-2806
NSN 6685-01-345-3401
NSN 5915-01-268-4970
NSN 5950-01-106-3961
NSN 6105-01-431-5455
NSN 6145-01-470-0930