1 with inner ring, inner and outer diameters are reinforced with several piles of metal without filler to give greater stability and better compression characteristics.
3 Size :From1/2"to 60" 150LB to 2500LB
4 Spiral Wound Metallic Gasket Material:
304+graphite high tempressure
304+asbestos/non asbestos high tempressure and some medium
304+ptfe enduring most of the medium
ss304can be changed to ss304L,316,316L ,Monel etc.
Rings:CS plated Zinc,ss304,ss306 ect.