Skip to content
⚠️ Please expect processing delays as we recover from a System Change. ⚠️
⚠️ Please expect processing delays as we recover from a System Change. ⚠️

Garlock GYLON® Style 3540 - 0.125 in. thick / 60in. x 60in.

Original price $2,460.32
Original price $2,460.32 - Original price $2,460.32
Original price $2,460.32
Current price $2,291.79
$2,291.79 - $2,291.79
Current price $2,291.79
SKU 35400-6608 Garlock
Can I get a discount on my purchase?

Our prices listed are our lowest possible price with current costing but when volumes/value are high enough sometimes we can get a discount from the manufacturer to pass on to you. If you feel your purchase size of a particular product is very large and want us to investigate with the manufacturer please feel free to Contact Us.

What if my item is out of stock?

All customers get an email regarding the shipping time frame of their purchase, usually within the business day. If your item is in stock we will ship within 1 business day, otherwise, the email will contain a lead time. If you do not receive this email, we recommend checking your email's spam folder. If you have any questions at that point please do not hesitate to Contact Us or chat below!

Can I get free shipping?

Shipping will calculate as free instantly if your order value exceeds $5000.


PRODUCT DESCRIPTION

Garlock Gaskets - GYLON® Family - Styles 3540
BENEFITS:
  • Pure microcellular PTFE
    • Similar to Style 3545, but without rigid core
MEDIA:
  • Ideal for wavy, warped, pitted or scratched flanges and for many types of flat face* flanges
  • Strong caustics, strong acids, hydrocarbons and chlorine, cryogenics. Conforms to FDA regulations.

NOTES:
Dramatically reduced leakage of GYLON® 3540 and 3545.
Average of three tests, using 580 psig nitrogen with 4,640 psi gasket load according to DIN 3535 requirements. All samples 1/16" (1.6 mm) thick.
* For flat face flanges, a minimum compressive stress of 1,500 psi (10.3 N/mm2) is recommended on the contacted gasket area for 150 psig (1.0 N/mm2) liquid service. Consult with the flange manufacturer to confirm that adequate compressive stress is available.

Typical Physical Properties

3540 3545
Color White GYLON® White GYLON®
Composition Microcellular PTFE Microcellular PTFE w/ rigid core
Temperature1 Minimum
Continuous Max.
-450°F (-268°C) 500°F 260°C) -450°F (-268°C) 500°F 260°C)
Pressure1cont. max.1 psig (bar) 1,200 (83) 1,200 (83)
P x T, max.1
1/32", 1/16"
(0.8mm, 1.6mm)
psig x °F 1/8"
(bar x °C) (3.2mm)
350,000(12,000)250,000(8,600) 350,000(12,000)250,000(8,600)
Sealability
ASTM Fuel A ml/hr

(ASTM F37B)3
0.25 0.15
Gas Permeabilitycc/min (DIN 3535 Part 4)4 <0.015 <0.015
Creep Relaxation
(ASTM F38) %
10 15
Compressibility Range(ASTM F36) % 70-85 60-70
Recovery (ASTM F36) % >8 >15
Tensile Strength ps(ASTM D1708) (N/mm2) - -
Flammability Will not support flame
Bacterial Growth Will not support

Order Code
(Part Number)
Style Thickness
(in.)
Width
(in.)
Length
(in.)
35400-6604 GYLON®-3540 0.063" 60" 60"
35400-7704 GYLON®-3540 0.063" 70" 70"
35400-6608 GYLON®-3540 0.125" 60" 60"
35400-7708 GYLON®-3540 0.125" 70" 70"
35400-6612 GYLON®-3540 0.188" 60" 60"
35400-6616 GYLON®-3540 0.250" 60" 60"

NOTES:
1 Based on ANSI RF flanges at our preferred torque. When approaching maximum pressure, continuous operating temperature, minimum temperature or 50% of maximum PxT, consult Garlock Engineering.
2 For 3565, HP 3560 and HP 3561, 1/16" thickness only.
3 ASTM F37B Sealability
ASTM Fuel A (isooctane):
Gasket load = 500 psi (3.5 N/mm2), Int. pressure = 9.8 psig (0.7 bar)
Nitrogen:
Gasket load = 3,000 psi (20.7 N/mm2), Int. pressure = 30 psig (2 bar)
4 DIN 3535 Part 4 Gas Permeability, cc/min. (1/16" thick)
Nitrogen:
Gasket load = 4,640 psi (32 N/mm2), Int. pressure = 580 psig (40 bar)

This is a general guide and should not be the sole means of selecting or rejecting this material. ASTM test results in accordance with ASTM F-104; properties based on 1/32" (0.8mm) sheet thickness.

* Values do not constitute specification limits