Special Features:

The jacket material is trelleborg american variseal aerolon 9, 85% ptfe tfe 15% graphite filled. Spring wire diameter is 0.012 inches. Spring must have 130 to 190 coils when assembled in seal. Spring weld shall be able to withstand a tensile force of 3lbs .

Properties:

A pliable rubber, felt, leather, or composition ring-shaped element, split or solid; with or without spring or spreader, having a metal shell on all or a portion of at least two of the outer surfaces. It may be designed to be either bolt mounted or pressmounted between fixed and moveable parts to form a tight and effective seal by the pressure of the spring or spreader or the resiliency inherent in the element material. Excludes packing with retainer.