1) Diameter: 47mm, 58mm, 70mm
2) Material: High grade silicone
3) Guards against water leakage
4) Used for solar water heater

Material...UV Stabilized Silicone Rubber
Density...1.15 g/cm3 +/- 0.05
Durometer Hardness (Shore A)...54
Elongation...320%
Rebound...54%
Maximum Working Temperature...300 C
Tensile Strength...6.4Mpa
Tear Strength...12.5KNM