PTFE Gasket: the Full name is Polytetrafluoroethylene Gasket, And Other names are PTFE Ring Gasket, PTFE 0 Ring, PTFE Washer. Beluns Gasket : Mechanical grade PTFE resin is suitable for most applications where PTFE is used. Mechanical grade is produced with a very small percentage of reprocessed (recycled) PTFE. It is ideal for a wide range of gaskets applications. Food, and Chemical applications are often sealed using PTFE . PTFE sheets are available in both Virgin, Mechanical and Expanded PTFE grades .
PTFE - an acronym for Polytetrafluoroethylene - is a high molecular weight polymer, one of the most versatile plastic materials known and useful for a large range of products for applications excluded to other materials. PTFE has extremely low coefficient of friction. PTFE is generally considered a thermoplastic polymer; at 327°C it maintains a very high viscosity, thus requiring particular transformation techniques for manufacturing of finished and semi-finished goods. PTFE can be employed at any temperature from -200°C to +260°C.
and its advanced properties make it an ideal choice of material for a wide range of applications - particularly those requiring high temperature, chemical resistance and excellent slip-stick performance. PTFE has advanced properties making it an ideal choice of material for a wide range of applications. PTFE rod, PTFE sheet and PTFE tube is particularly useful where high temperature or excellent chemical resistance is required. With its low coefficient of friction PTFE also exhibits excellent slip-stick performance.
PTFE is reinforced with 25% glass fibres. The added glass fibre improves the wear properties and, to a minor degree, also the deformation strength under load while leaving substantially unchanged the electrical and chemical characteristics. However, it is important to remember that glass, has a rather poor resistance against alkalis and is easily attacked by hydrofluoric acid. The coefficient of friction is also slightly increased.
25% carbon is added to the PTFE, along with a small percentage of graphite. The carbon tends to improve - to a considerable degree - wear and deformation strength, whilst leaving the chemical resistance practically unchanged, but substantially modifying the electrical properties.
PTFE, because of the properties previously described, is used in many applications. Properties can be improved and/or modified by adding suitable fillers. The fillers most commonly used, in concentrations to suit application, are: Glass fibre, Carbon fibre, Bronze, Graphite, Molybdenum disulphide (MoS2), Metal powders, Ceramics, Metal oxides, and can also be produced using mixtures of two or more additives.
Beluns PTFE Sheet gasket Material: comes in several forms. The first thing that must be determined is what type of PTFE gasket material your looking for. The first and most common form is a virgin PTFE gasket material. Virgin PTFE is specified for medical or electrical applications. Most applications however are not medical or electrical and can easily be satisfied with mechanical grade PTFE. Flat Ptfe Gaskets With Good Sealing Performance, Corrosion Resistant Ptfe Gasket Filled With Carbon Fiber, PTFE Flange Gaskets For Automotive, Non - Viscous, Chemical Resistant Ptfe Teflon Gasket Sealing, High Demand Ptfe Gasket Washer A Grade For Air Conditioner, Heat Resistant Ptfe Flat Washer, Anti - Creeping Ptfe Gasket Heat Resistant For Refrigerator, High Temperature Rubber Ptfe Gasket With 23MPa Yield Strength, Low Flammability Ptfe Shim Washer With Chemical Resistant, Heat Resistant Ptfe Gasket Sealing , 30MPa Tensile Strength, Chemical Resistant Ptfe Flange Gasket, Reinforced Ptfe Gasket With High Performance And Low Friction. Sealing ptfe gasket, Super High Strength Ptfe Gasket, Lattice Braid Excellent Insulation Virgin Ptfe Gasket, Excellent Insulation Virgin Ptfe Gasket, Specialty Expanded Ptfe Teflon Flat Washer For Pressure Cooker.
PTFE GASKET (Size) |
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PTFE GASKET |
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OD (MM) |
ID (MM) |
T (MM) |
PTFE |
PTFE + FiberGlass |
PTFE + Graphite |
PTFE + Carbon |
PTFE + Bronze |
PTFE + Aramid |
10 |
5 |
3 |
0.0004 |
0.0004 |
0.0004 |
0.0004 |
0.0006 |
0.0004 |
15 |
5 |
3 |
0.0011 |
0.0011 |
0.0011 |
0.0011 |
0.0016 |
0.0011 |
20 |
5 |
3 |
0.0020 |
0.0020 |
0.0020 |
0.0020 |
0.0031 |
0.0020 |
25 |
5 |
3 |
0.0033 |
0.0032 |
0.0033 |
0.0033 |
0.0049 |
0.0033 |
30 |
5 |
3 |
0.0047 |
0.0047 |
0.0047 |
0.0047 |
0.0072 |
0.0047 |
35 |
10 |
3 |
0.0061 |
0.0061 |
0.0061 |
0.0061 |
0.0093 |
0.0061 |
40 |
10 |
3 |
0.0081 |
0.0081 |
0.0081 |
0.0081 |
0.0124 |
0.0081 |
45 |
20 |
3 |
0.0088 |
0.0088 |
0.0088 |
0.0088 |
0.0134 |
0.0088 |
50 |
30 |
3 |
0.0087 |
0.0086 |
0.0087 |
0.0087 |
0.0132 |
0.0087 |
55 |
30 |
3 |
0.0115 |
0.0114 |
0.0115 |
0.0115 |
0.0175 |
0.0115 |
60 |
40 |
3 |
0.0108 |
0.0106 |
0.0108 |
0.0108 |
0.0165 |
0.0108 |
65 |
40 |
3 |
0.0142 |
0.0140 |
0.0142 |
0.0142 |
0.0216 |
0.0142 |
70 |
40 |
3 |
0.0179 |
0.0177 |
0.0179 |
0.0179 |
0.0272 |
0.0179 |
75 |
50 |
3 |
0.0169 |
0.0166 |
0.0169 |
0.0169 |
0.0258 |
0.0169 |
80 |
50 |
3 |
0.0211 |
0.0208 |
0.0211 |
0.0211 |
0.0322 |
0.0211 |
85 |
55 |
3 |
0.0228 |
0.0224 |
0.0228 |
0.0228 |
0.0346 |
0.0228 |
90 |
55 |
3 |
0.0275 |
0.0271 |
0.0275 |
0.0275 |
0.0419 |
0.0275 |
95 |
55 |
3 |
0.0325 |
0.0322 |
0.0325 |
0.0325 |
0.0495 |
0.0325 |
100 |
60 |
3 |
0.0347 |
0.0343 |
0.0347 |
0.0347 |
0.0528 |
0.0347 |
110 |
60 |
3 |
0.0461 |
0.0456 |
0.0461 |
0.0461 |
0.0701 |
0.0461 |
120 |
60 |
3 |
0.0585 |
0.0581 |
0.0585 |
0.0585 |
0.0891 |
0.0585 |
130 |
60 |
3 |
0.0721 |
0.0716 |
0.0721 |
0.0721 |
0.1097 |
0.0721 |
140 |
70 |
3 |
0.0797 |
0.0791 |
0.0797 |
0.0797 |
0.1212 |
0.0797 |
150 |
70 |
3 |
0.0954 |
0.0948 |
0.0954 |
0.0954 |
0.1451 |
0.0954 |
160 |
80 |
3 |
0.1040 |
0.1033 |
0.1040 |
0.1040 |
0.1583 |
0.1040 |
170 |
80 |
3 |
0.1219 |
0.1212 |
0.1219 |
0.1219 |
0.1855 |
0.1219 |
180 |
80 |
3 |
0.1409 |
0.1401 |
0.1409 |
0.1409 |
0.2144 |
0.1409 |
190 |
90 |
3 |
0.1517 |
0.1508 |
0.1517 |
0.1517 |
0.2309 |
0.1517 |
200 |
90 |
3 |
0.1729 |
0.1719 |
0.1729 |
0.1729 |
0.2631 |
0.1729 |
210 |
100 |
3 |
0.1848 |
0.1836 |
0.1848 |
0.1848 |
0.2812 |
0.1848 |
220 |
100 |
3 |
0.2081 |
0.2069 |
0.2081 |
0.2081 |
0.3167 |
0.2081 |
230 |
120 |
3 |
0.2086 |
0.2069 |
0.2086 |
0.2086 |
0.3175 |
0.2086 |
240 |
120 |
3 |
0.2341 |
0.2324 |
0.2341 |
0.2341 |
0.3562 |
0.2341 |
250 |
120 |
3 |
0.2607 |
0.2590 |
0.2607 |
0.2607 |
0.3967 |
0.2607 |
260 |
120 |
3 |
0.2883 |
0.2866 |
0.2883 |
0.2883 |
0.4387 |
0.2883 |
270 |
130 |
3 |
0.3035 |
0.3015 |
0.3035 |
0.3035 |
0.4618 |
0.3035 |
280 |
130 |
3 |
0.3333 |
0.3313 |
0.3333 |
0.3333 |
0.5072 |
0.3333 |
290 |
140 |
3 |
0.3495 |
0.3472 |
0.3495 |
0.3495 |
0.5319 |
0.3495 |
300 |
200 |
3 |
0.2710 |
0.2662 |
0.2710 |
0.2710 |
0.4123 |
0.2710 |
350 |
200 |
3 |
0.4471 |
0.4424 |
0.4471 |
0.4471 |
0.6803 |
0.4471 |
400 |
300 |
3 |
0.3793 |
0.3687 |
0.3793 |
0.3793 |
0.5773 |
0.3793 |
450 |
300 |
3 |
0.6096 |
0.5990 |
0.6096 |
0.6096 |
0.9277 |
0.6096 |
500 |
350 |
3 |
0.6909 |
0.6765 |
0.6909 |
0.6909 |
1.0514 |
0.6909 |
550 |
400 |
3 |
0.7722 |
0.7534 |
0.7722 |
0.7722 |
1.1751 |
0.7722 |
600 |
400 |
3 |
1.0838 |
1.0650 |
1.0838 |
1.0838 |
1.6493 |
1.0838 |
650 |
500 |
3 |
0.9348 |
0.9053 |
0.9348 |
0.9348 |
1.4225 |
0.9348 |
700 |
500 |
3 |
1.3006 |
1.2711 |
1.3006 |
1.3006 |
1.9791 |
1.3006 |
750 |
600 |
3 |
1.0974 |
1.0550 |
1.0974 |
1.0974 |
1.6699 |
1.0974 |
800 |
600 |
3 |
1.5173 |
1.4749 |
1.5173 |
1.5173 |
2.3090 |
1.5173 |
850 |
600 |
3 |
1.9644 |
1.9220 |
1.9644 |
1.9644 |
2.9893 |
1.9644 |
900 |
700 |
3 |
1.7341 |
1.6764 |
1.7341 |
1.7341 |
2.6389 |
1.7341 |
950 |
700 |
3 |
2.2354 |
2.1776 |
2.2354 |
2.2354 |
3.4017 |
2.2354 |
1000 |
700 |
3 |
2.7637 |
2.7060 |
2.7637 |
2.7637 |
4.2057 |
2.7637 |
2000 |
1000 |
3 |
16.2573 |
16.1395 |
16.2573 |
16.2573 |
24.7393 |
16.2573 |
Remark: |
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1. Thickness according skived PTFE Sheet, 0.1mm, 0.5mm, 1mm, 2mm, 5mm, up to 1000mm. Etc. |
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2. PTFE Gasket 's OD and ID accoring customer's requirements |
PTFE GASKET DATA SHEET |
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PTFE GASKET and Filled PTFE GASKET Property |
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Property |
Unit |
PTFE |
PTFE + FiberGlass |
PTFE + Graphite |
PTFE + Carbon |
PTFE + Bronze |
PTFE + Aramid |
Density |
g/m³ |
2.16~2.25 |
2.2~2.26 |
2.10~2.16 |
2.11~2.17 |
3.0~4.0 |
|
Long Term Working Temperature |
°C |
一200~ 十260 |
一200~ 十260 |
一200~ 十260 |
一200~ 十260 |
一200~ 十260 |
|
Max Short Tem |
°C |
310 |
310 |
310 |
310 |
310 |
|
Meltint Point |
°C |
327 |
327 |
327 |
327 |
327 |
|
Tensile Strength |
Mpa |
25~40 |
19~25 |
15~20 |
14~23 |
18~29 |
|
Yield Strength |
Mpa |
|
8~14 |
9~18 |
10~20 |
8~15 |
|
Hardness |
Mpa |
>65 |
64 |
59 |
68 |
67 |
|
Flammability Oxygen |
% |
530 |
530 |
530 |
630 |
530 |
|
Elongation at Break |
% |
280~450 |
240~330 |
150~250 |
70~150 |
200~320 |
|
Flexural Modulus |
Mpa |
490 |
720 |
780 |
960 |
745 |
|
Volume Resistibity |
Ohm.m |
10 16 |
|
|
|
|
|
Weather Resistance |
Ohm.m |
10 16 |
|
|
|
|
|
Impact Strength |
KJ/m² |
150 |
130 |
150 |
70 |
150 |
|
Food Grade |
|
Yes |
Yes |
Yes |
Yes |
Yes |
|
|
|
|
|
|
|
|
|
·Glass Fiber Filled PTFE Gasket | 2015-9-5 |
·Graphite Filled PTFE Gasket | 2015-9-5 |
·What is PTFE ? | 2015-9-4 |
·(MSDS) PTFE GASKET | 2015-5-24 |
·(RoHs & FDA) PTFE GASKET | 2015-5-24 |
·(SGS) PTFE GASKET | 2015-5-24 |