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 6150-01-020-9870
NSN 5835-01-442-6482
NSN 7035-00-760-5479
NSN 5835-00-827-1904
NSN 5950-01-359-4385
NSN 5905-00-230-7860
NSN 6650-01-517-9452
NSN 6130-00-807-9513
NSN 2925-00-422-5159
NSN 6685-01-432-2266
NSN 6620-01-219-7432
NSN 5985-01-104-1424