Commonly used with metric o-rings, these back-up rings are made of virgin PTFE unless suffix specifies otherwise.

STANDARD IS VIRGIN PTFE

G = GLASS FILLED PTFE

B = BRONZE FILLED PTFE

CG = CARBON GRAPHITE FILLED PTFE

S = SPLIT RING

SEAL INFORMATION MATERIAL PTFE TEMPERATURE RANGE -100° to +500° F PART NUMBER (Prefix) – (ID) x (CS) x (W)
SCS PART NUMBERS
MBT 3 X 1.5 X 1.25
Type of Seal   Inside
Diameter
  Cross
Section
  Width