PFA-SIL TS75OR51 O-Ring, Size: -139
Material: PFA-SIL TS75OR51 O-Ring
Size: AS568 -139 O-Ring
Part Number: TS75OR51-OR-139
TS75OR51
Teflon® PFA Encapsulated Silicone
75
Shore A
Encapsulated
Hollow Silicone Core
Color: Orange
Detailed Description
TS75OR51-OR-139 is a Orange, 75 Shore A, Teflon® PFA Encapsulated Silicone O-Ring, a Hollow Silicone Core product. TS75OR51 is manufactured with the following features & specifications: Encapsulated. TS75OR51-OR-139 is AS568 size -139 O-Ring also referred to as 2.62mm (Cross Sectional Diameter (CS)) x 55.25mm (Inside Diameter (ID)).
Material: PFA-SIL TS75OR51 O-Ring
Size: AS568 -139, 2.62mm CS X 55.25mm ID (0.103" CS X 2.175" ID)
| Technical Specification | Value |
|---|---|
| Compound Number | TS75OR51 |
| Material | Teflon® PFA Encapsulated Silicone |
| Subtype | Hollow Silicone Core |
| Color | Orange |
| Durometer | 75 Shore A |
| High Temperature | 260 °C / 500 °F |
| Low Temperature | -62 °C / -80 °F |
| Geometry Specifications | |
| Cross Sectional Geometry | O-Ring |
| Size Standard | AS568 |
| Size | -139 |
| Cross Section (CS) | 2.62 mm / 0.103 in |
| Inside Diameter (ID) | 55.25 mm / 2.175 in |
| Other Specifications | |
Encapsulated | |
TS75OR51 is a 75 shore A orange PFA encapsulated silicone compound featuring a hollow silicone core designed to improve flexibility and sealing performance in low load applications. The PFA Teflon outer shell provides exceptional chemical resistance against aggressive acids, solvents, and process media, while the hollow silicone core enhances compressibility for effective sealing in O-rings and gaskets. This material offers excellent thermal stability across a wide service temperature range of -62°C to 260°C and is compliant with FDA 21 CFR 177.1550, USP Class VI, and 3A 20-17 standards. TS75OR51 is ideal for pharmaceutical, food processing, and chemical applications where both compliance and resistance to harsh environments are required.
PFA encapsulated silicone materials are composite sealing solutions that combine the chemical inertness of fluoropolymers with the elasticity of silicone rubber cores. The PFA outer layer provides near universal chemical compatibility, while the hollow silicone core improves sealing in low compression force applications compared to solid core designs. These materials are commonly used in O-rings and gaskets for pharmaceutical, semiconductor, and chemical processing systems where contamination resistance and chemical durability are critical. While highly resistant to chemicals, encapsulated seals are generally best suited for static applications due to reduced abrasion resistance and limited dynamic performance.
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