CTG Energizer Low-Torque Flange Gaskets
CTG Energizer™ low-torque flange gaskets for FRP, PVC, CPVC and PVDF piping, 1/2″ to 24″ standard (to 36″ by request). NRT and ET styles with a seamless TFM® or PTFE face bonded to a 65–75 durometer elastomer body; elastomer-only ER and NRR styles; -40°F to 300°F.
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What are CTG Energizer gaskets?
The CTG Energizer™ is the low-torque flange gasket made by CTG, Inc. (CT Gasket & Polymer Co.) for FRP and plastic piping systems: a 65–75 durometer elastomer body with a seamless sealing face of 100% virgin TFM® or PTFE totally bonded to it. CTG states it needs minimal torque to seal and will not come apart at the inside seam.
PE Energy supplies CTG Energizer gaskets in standard sizes from 1/2″ to 24″, and 26″ to 36″ by request.
Request a quote for any CTG Energizer part number or call +1 (281) 310-0628 / pesales@pe-energy.com. Include the style (NRT or ET), shield (TFM® or PTFE) or elastomer, and quantity.
Are CTG Energizer gaskets used in data centers?
CTG designed the Energizer for FRP and plastic piping systems, where flanges cannot take high bolt loads. According to CTG, it is widely used in data center cooling plants, where plastic piping (FRP, PVDF, HDPE) with ANSI-style flanged joints carries glycol and water and goes through constant thermal cycling.
Which CTG Energizer part numbers are available?
| Size | CTG part number | ID (in) | OD (in) | Bolt circle (in) | Hole dia. (in) | Bolt holes | Torque, steel flanges (ft-lb) | Torque, dual/FRP flanges (ft-lb) |
|---|---|---|---|---|---|---|---|---|
| 1/2″ | CTG100100 | 0.71 | 3.50 | 2.38 | 0.62 | 4 | 15-25 | 15 |
| 3/4″ | CTG100101 | 0.86 | 3.88 | 2.75 | 0.62 | 4 | 15-25 | 15 |
| 1″ | CTG100102 | 1.16 | 4.25 | 3.125 | 0.62 | 4 | 15-25 | 15 |
| 1-1/4″ | CTG100103 | 1.25 | 4.63 | 3.50 | 0.62 | 4 | 15-30 | 15 |
| 1-1/2″ | CTG100104 | 1.72 | 5 | 3.875 | 0.62 | 4 | 15-30 | 15 |
| 2″ | CTG100105 | 2.16 | 6 | 4.75 | 0.75 | 4 | 25-50 | 25 |
| 2-1/2″ | CTG100106 | 2.50 | 7 | 5.50 | 0.75 | 4 | 25-80 | 25 |
| 3″ | CTG100107 | 3.15 | 7.50 | 6 | 0.75 | 4 | 25-80 | 25 |
| 3-1/2″ | CTG100108 | 3.46 | 8.50 | 7 | 0.75 | 8 | 25-80 | 25 |
| 4″ | CTG100109 | 4.06 | 9 | 7.50 | 0.75 | 8 | 30-55 | 30 |
| 5″ | CTG100120 | 4.97 | 10 | 8.50 | 0.88 | 8 | 30-80 | 30 |
| 6″ | CTG100110 | 6.14 | 11 | 9.50 | 0.88 | 8 | 30-80 | 30 |
| 8″ | CTG100111 | 8.10 | 13.50 | 11.75 | 0.88 | 8 | 40-120 | 40 |
| 10″ | CTG100112 | 10.13 | 16 | 14.50 | 1 | 12 | 40-115 | 40 |
| 12″ | CTG100113 | 12.22 | 19 | 17 | 1 | 12 | 40-155 | 45 |
| 14″ | CTG100114 | 13.87 | 21 | 18.75 | 1.12 | 12 | 50-235 | 50 |
| 16″ | CTG100115 | 15.81 | 23.50 | 21.25 | 1.12 | 16 | 50-210 | 50 |
| 18″ | CTG100116 | 17.90 | 25 | 22.75 | 1.25 | 16 | 50-210 | 50 |
| 20″ | CTG100117 | 19.96 | 27.50 | 25 | 1.25 | 20 | 60-220 | 60 |
| 24″ | CTG100119 | 23.94 | 32 | 29.50 | 1.37 | 20 | 65-300 | 65 |
| 26″ | CTG106485 | 26 | 34.25 | 31.75 | 1.38 | 24 | 70-350 | 70 |
| 28″ | CTG106486 | 28 | 36.50 | 34 | 1.38 | 28 | 80-400 | 80 |
| 30″ | CTG106487 | 30 | 38.75 | 36 | 1.38 | 28 | 95-475 | 95 |
| 32″ | CTG106663 | 32 | 41.75 | 38.50 | 1.62 | 28 | 105-495 | 105 |
| 34″ | CTG106488 | 34 | 43.75 | 40.50 | 1.62 | 32 | 115-525 | 115 |
| 36″ | CTG106892 | 36 | 46 | 42.75 | 1.62 | 32 | 135-575 | 135 |
Per CTG: gaskets larger than 12″ with a TFM® shield, and PTFE-shield gaskets larger than 24″, are made by request. Source: CTG Energizer Gaskets data sheet.
Which CTG Energizer style should I order?
| Style | Construction | Use on |
|---|---|---|
| CTG Energizer NRT (no ribs) | TFM® or PTFE shield bonded to elastomer body; will not interfere with the raised (serrated) portion of the flange | Cast & ductile iron, CPVC, PVC, Fibercast FRP, machine-made FRP, press-molded FRP, PVDF, serrated or ribbed steel |
| CTG Energizer ET (ribbed) | Three sealing ribs (two below 2″), increased shield thickness | Contact-molded and hand lay-up FRP; flat-faced flanges with no ribs or serrations |
| CTG Energizer ER (ribbed, elastomer only) | Fully ribbed seal, no shield; EPDM, Viton®, HNBR, NBR and more | Ductile iron, fiberglass, FRP, plastic, PVC |
| CTG Energizer NRR (no ribs, elastomer only) | Flat elastomer gasket, ring face or full face | Ductile iron, fiberglass, FRP, plastic, PVC |
The CTG data sheet covers the NRT and ET styles; ER and NRR are listed on CTG’s product page. Confirm the part number for ER and NRR styles when you request a quote.
How is the CTG Energizer gasket built?
- Sealing surface: 100% pure virgin TFM® or PTFE, totally bonded to the gasket body (NRT and ET styles)
- Seamless, radius-style shield that will not come apart at the inside seam
- Body: 65–75 durometer elastomer; typical compression set of 15% or better
- Minimal torque required to seal
- Elastomers offered by CTG: Aflas®, Butyl, EPDM, Nitrile, Viton® A, Viton® B, Viton® GF, Viton® Extreme™
- ET style also available as 100% elastomer, or with EPDM filler and PTFE shield
- Temperature range: -40°F to 300°F (-40°C to 149°C)
- Non-asbestos construction
- Gasket factor m: 2.0; required seating stress y: 400 psi; P × T max: 50,000 (psig × °F), per the CTG data sheet
Documents
- CTG Energizer Gaskets Data Sheet (PDF)
- CTG Energizer Gaskets Data Sheet with M and Y gasket factors (PDF)
CTG and Energizer™ (as a gasket product name) are trademarks of CTG, Inc.; TFM® is a trademark of 3M/Dyneon; Viton® is a trademark of The Chemours Company; Aflas® is a trademark of AGC Inc. PE Energy is an independent supplier of CTG products. Specifications are from CTG published data and may change without notice.
Additional information
| Manufacturer | CTG, Inc. (CT Gasket & Polymer Co.) |
|---|---|
| Size range | 1/2" to 24" standard; 26" to 36" by request |
| Sealing face | TFM, PTFE |
| Temperature range | -40°F to 300°F (-40°C to 149°C) |
| Styles | NRT, ET, ER, NRR |
| Condition | New |
| Country of manufacture | USA (per CTG) |
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