Double seal for working with barrier fluids in which the springs are isolated from the fluid product. API53A & API54 assemblies. Recommended in applications with toxic, pollutant or potentially dangerous products in which safety is an important factor. Available with a pumping ring on the cashing to reduce the temperature between the contact surfaces and facilitate the barrier fluid movement (reference 740F).

OPERATING LIMITS:

V= 20m/s

p= 16kg/cm²

d = 18 ÷100mm

t= -15 ÷ +200⁰C