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 5905-01-528-6645
NSN 5965-01-519-8758
NSN 6685-01-116-3422
NSN 5925-01-119-4393
NSN 6145-01-221-0773
NSN 6105-00-460-3852
NSN 7035-01-118-5861
NSN 5996-01-229-3316
NSN 5950-00-561-8224
NSN 5998-01-309-0500
NSN 6610-00-232-9485
NSN 6130-01-089-8154