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 6685-01-086-8172
NSN 6130-00-114-5019
NSN 6220-00-239-9219
NSN 2925-01-011-8732
NSN 5975-01-030-8767
NSN 5905-01-509-3649
NSN 6320-01-229-6479
NSN 2925-00-915-1827
NSN 6220-00-003-6371
NSN 6610-00-458-5444
NSN 5895-00-222-5043
NSN 5855-01-141-8227