STRESS SAVER®
Low-Torque Gaskets
The Garlock STRESS SAVER® family of products feature molded, raised ribs that help to create a tighter seal by concentrating the compressive load, ideal for lightweight piping and non-metallic flange applications where low bolt load and chemical resistance are issues. This rib design allows the STRESS SAVER® gaskets to seal where flat rubber and traditional PTFE gaskets will not.
STRESS SAVER®
STRESS SAVER® GYLON® 3504
STRESS SAVER® GYLON® Style 3504 combines the proven sealing advantages of molded, raised ribs with the performance characteristics of the industry recognized GYLON® 3504 PTFE gasketing material. The combination of these two time-tested configurations makes STRESS SAVER® GYLON® Style 3504 the ultimate sealing solution. STRESS SAVER® GYLON® Style 3504 already has been tested in accordance to „new TA-Luft“ on some PP / PE / PVDF / FRP flange materials with backing steel backing flanges and A2-70 screws.
Features & Benefits
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Chemical resistance – GYLON® 3504 is ideal for a wide range of caustics and acids, helping to simplify the selection process
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Superior Physical Properties – Higher temperature and pressure capabilities as compared to rubber gaskets
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Homogeneous Construction – Single piece design helps avoid permeation, delamination, fold-over of PTFE envelopes, or potential splitting when installed against raised face flanges
Specifications
- Composition:
100% GYLON® PTFE with aluminosilicate microspheres
- Color: Blue
- Temperature:
-268°C to 260°C / -450° F to 500° F
- Pressure:
55 bar, 800 psi
- PxT (max):
8.600 (bar x °C) / 250.000 (psig x °F)
- Media:
All solvents, most caustics and acids, hydrocarbons, refrigerants, cryogenics and potable water
- Approved to NSF-61 for potable water applications
STRESS SAVER® 3522
Garlock’s patented STRESS SAVER® 3522 technology is constructed of 100% pure and restructured PTFE, offering universal chemical compatibility, limited leachable contaminants, and easy-to-clean contact surfaces with lowest surface energy which does not support bacterial growth. The STRESS SAVER® 3522 is engineered and designed to work effectively in higher-stress raised face flanges and lower-stress non-metallic flange designs to simplify the selection process and ensure long-term reliability.
Features & Benefits
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Crush-resistant and ideal for both raised face and flat face flanges
- Easy-to-clean surface finish that does not promote bacterial growth
- Homogeneous construction to avoid permeation, delamination, or leachable contamination
Specifications
- Composition:
100% pure PTFE (No filler)
- Temperature:
-268°C to +260°C / -450° F to 500° F
- Pressure:
up to 83 bar
- Compressibility:
(ASTM F36) 20-25%
STRESS SAVER® 370
STRESS SAVER® 370 gaskets feature raised, molded-in sealing rings and seal with 75% less surface area for high performance in non-metallic flanges. Its pure PTFE sealing surface resists many chemicals and the contaminant-free EPDM body is ideal for a variety of high purity applications.
Features & Benefits
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Raised, molded-in sealing rings seal with 75% less surface area for high performance in nonmetallic flanges
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Proprietary process bonds PTFE to elastomer, won’t delaminate or leach
Specifications
- Available in ASME and DIN sizes
- Min. Temperature: -40°C / -40°F
- Max. Temperature: 149°C / 300°F
- Max. Pressure: 17 bar / 250 psi
- Maximum PxT 1/8: 1.717 (°C x bar) / 50.000 (°F x PSIG)
STRESS SAVER® XP
Single piece molded design made from high performance, proprietary blend of fluoroelastomers. Suitable for use in potable drinking water, steam, and severe chemicals.
Features & Benefits
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Lower seating stress than expanded or specialty PTFE gaskets; ideal for nonmetallic flanges
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Won’t fail due to filler attack
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Eliminates envelope fold-over during installation
Specifications
- Min. Temperature:
-26°C / -15°F
- Max. Temperature:
204°C / 400°F
- Max. Pressure:
17 bar / 250 psi
- Maximum PxT ⅛:
1.717 (°C x bar) / 50.000 (°F x PSIG)
STRESS SAVER® 6800
The STRESS SAVER® Style 6800 provides an economical solution for applications where a PTFE envelope is not required.
Features & Benefits
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Raised, molded-in sealing rings seal with 75% less surface area for high performance in nonmetallic flanges
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More economical gasket where a PTFE envelope is not required
Specifications
- Min. Temperature:
-40°C / -40°F
- Max. Temperature:
149°C / 300°F
- Max. Pressure:
17 bar / 250 PSI
- Maximum PxT 1/8:
1.717 (°C x bar) / 50.000 (°F x PSIG)
Downloads
GYLON® Style 3504 & GYLON® Style 3522
- Declaration of Conformity FDA
- Letter of Conformance – Animal Derivates Ingredients – ADI
- Declaration of Conformity – Phthalate free, Bisphenol free
DIN EN 13555
FOOD SAFE – EC1935/2004, EC 10/2011 conformity
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