SEALEX® Joint Sealant

PTFE Joint Sealant

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Sealex® joint sealant, specially processed, 100% pure PTFE on a roll, provides soft, highly compressible gasketing for longer life and trouble-free sealing. Its form-in-place versatility also cuts maintenance and storage costs. The high compressibility of Sealex® enables it to effectively fill flange imperfections for a tight, leak-free seal. Under pressure, it provides a wide, thin, ribbon-like seal. Unlike conventional PTFE which is prone to cold flow, Sealex® has good creep resistance and bolt torque retention properties.

Sealex® joint sealant does not support bacterial growth or cause product contamination and is FDA compliant. It has virtually no shelf-life concerns since PTFE is unaffected by normal environmental conditions.

Sealex® has excellent resistance properties to chemical attack. It is ideal for most chemical services at temperatures to 500°F (260°C) and pressure to 2,000 psi (138 bar). It is also suitable for cryogenic use to -321°F (-196°C).

The sealant is available in roll form which helps reduce storage space, and is available in a wide variety of thicknesses and lengths.

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Sealex

Easy to Use Sealex®

Just follow the simple installation instructions. Select the size Sealex®. Use a size with nominal width of between 1/3 and 1/2 of the effective flange sealing width.

  1. Make sure that the sealing flanges are clean.

  2. Cut off a length of Sealex® just a little longer than the actual circumference of the perimeter of the seal.

  3. Peel off the adhesive protection strip, and press the Sealex® into position. Cross the free ends of the Sealex® adjacent to the bolt hole.

  4. Bolt up the mating surfaces using the recommended clamping force and bolt tightening patterns.

 
 

Sealex® joint sealant can be used wherever reliable gasketing is required

» Fume ducts
» Concrete lids
» Heat exchangers
» Fiberglass reinforced plastic vessels
» Pump or compressor housing flanges
» Steam vessel flanges
» Glass joints
» Ceramic joints
» Water systems
» Valves and piping
 
Size selection/torques required to seal ANSI 150lb flanges
 
NOMINAL
FLANGE
SIZE (IN)		 NUMBER
BOLTS
(N)		 BOLT
SIZE
(IN)		 *APPROX.
SEALEX
LENGTH
(IN)		 SUGGESTED
SEALEX
SIZE (IN)		 SEALING
STRESS
(LBS/IN)		 TORQUE
(LB/FT)
1/2 4 .5 4.3 3/16 1570 30
3/4 4 .5 5.2 3/16 1570 30
1 4 .5 6.2 3/16 1570 30
1-1/4 4 .5 7.4 3/16 1570 30
1-1/2 4 .5 8.3 1/4 2140 30
2 4 .625 10.2 1/4 2140 60
2-1/2 4 .625 12.2 1/4 2140 60
3 4 .625 13.9 1/4 2140 60
4 8 .625 17.9 3/8 2620 60
5 8 .75 20.9 3/8 2760 100
6 8 .75 24.1 3/8 2652 100
8 8 .75 30.9 3/8 2625 100
10 12 .875 37.9 3/8 2750 160
12 12 .875 45.4 1/2 3000 160

*Based on mean sealing diameter