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| Spiral Wound Gasket |
A spiral wound gasket able to compress and seal under various loads and provide sealing capabilities. The gasket generally includes a spiral wound portion and an outer guide ring to limit the compression of the gasket. The spiral winding is formed of interdisposed windings of a metal and an elastomer sealant. The metal winding has a non-planar cross-section to inhibit buckling under compression. The gasket is dimensioned such that the elastomer sealant winding has a width greater than the width of the metal winding which has a width greater than the thickness of the guide ring. In this manner, the sealant is compressed before compression of the metal winding which can be compressed until the outer guide ring is encountered.
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| RTJ gasket |
Ring joint gaskets are made by forging and heat treatment.Ring joint gaskets are used in oil and the flange, pressure vessels, high-speed joint face, such as high temperature and high pressure valve cover gasket sealed metal.In particular pressure, temperature fluctuations Of the occasion,Ring joint gaskets can still maintain good seal.
R-type over ring joint gaskets are commonly divided into an oval or octagonal type.R-ring gaskets are manufactured as API 6A and ASME B16.20-standard. The maximum pressure of Ring joint gaskets is up to 10000 PSI.In the flange of trapezoidal slot, octagonal ring joint gaskets and ring joint gaskets are interchangeable. RX-type ring joint gaskets are applied to enhance the capability of R-ring gasket. BX-type ring joint gaskets are applied to 15000 PSI pressure system. There are many materials and apply to different forms of design and operational requirements, reference material characteristics table. |
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| Insulation Sets |
Insulation sets are often used in petrochemical applications electrically isolate two mating flanges to reduce the likelihood of creating a galvanic cell which would result in corrosion of the flanges and pipework. Insulation sets are also used to prevent the flow of electrostatic charge to reduce sparking in hazardous environments.
Insulation sets often comprise an insulating gasket and set of two insulation and two steel washers and one insulating sleeve per bolt. |
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| Non-Metallic Flat Gasket |
| Item |
Standard & Code |
Applicable Pressure |
Applicable Temperature |
Flange Surface |
| NBR |
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-30~110℃ |
FF, RF |
| |
HG20606-97 |
PN0.25/0.6/1.0/1.6 |
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HG20627-97 |
PN2.0 |
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ANSI B16.21 |
150LB |
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| EPDM |
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-40~130℃ |
FF, RF |
| |
HG20606-97 |
PN0.25/0.6/1.0/1.6 |
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HG20627-97 |
PN2.0 |
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ANSI B16.21 |
150LB |
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| Viton |
|
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-50~200℃ |
FF, RF |
| |
HG20606-97 |
PN0.25/0.6/1.0/1.6 |
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HG20627-97 |
PN2.0 |
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ANSI B16.21 |
150LB |
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| Asbestos |
|
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As per Grade/Brand |
FF, RF |
| |
HG20606-97 |
PN0.25/0.6/1.0/1.6 |
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HG20627-97 |
PN2.0 |
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SH3401-96 |
PN2.0 |
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ANSI B16.21 |
150LB |
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| Non-Asbestos |
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As per Grade/Brand |
FF, RF, MFM, TG |
| |
HG20606-97 |
PN0.25/0.6/1.0/1.6/2.5/4.0 |
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HG20627-97 |
PN2.0/5.0 |
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ANSI B16.21 |
150/300LB |
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| PTFE |
|
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-196~260℃ |
FF, RF, MFM, TG |
| |
HG20606-97 |
PN0.25/0.6/1.0/1.6/2.5/4.0 |
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HG20627-97 |
PN2.0/5.0 |
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ANSI B16.21 |
150/300LB |
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| Flexible Graphite |
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450℃(max) |
RF, MFM, TG |
| |
HG20608-97 |
PN1.0/1.6/2.5/4.0/6.3 |
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HG20629-97 |
PN2.0/5.0/11.0 |
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ANSI B16.21 |
150/300/600LB |
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| PTFE Enveloped |
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150℃(max) |
RF |
| |
HG20607-97 |
PN0.6/1.0/1.6/2.5/4.0 |
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HG20628-97 |
PN2.0/5.0 |
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SH3402-96 |
PN2.0/5.0 |
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ANSI B16.21 |
150/300LB |
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| Spiral Wound Gasket(SWG) |
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| Type |
Standard & Code |
Material Winding Strip |
Inner Ring |
Outer Ring |
Filler |
| Basic Construction Type |
HG20610-97 |
SS304 |
SS304 |
CS |
Graphite |
| With Inner Metal Ring |
HG20631-97 |
SS304L |
SS304L |
SS304 |
PTFE |
| With Outer Metal Ring |
SH3407-96 |
SS316 |
SS316 |
SS316 |
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| With Inner & Outer Metal Ring |
API601 |
SS316L |
SS316L |
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| |
|
SS321 |
SS321 |
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INCONEL 600 |
INCONEL 600 |
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INCONEL X750 |
INCONEL X750 |
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INCOLOY 800 |
INCOLOY 800 |
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HASTELLOY C276 |
HASTELLOY C276 |
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MONEL 400 |
MONEL 400 |
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NICKLE 200 |
NICKLE 200 |
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| Ring Type Joint Gasklet(RTJ) |
| Type |
Standard & Code |
Material |
|
Maximum Hardness(HB) |
| Oval Ring Gasket |
HG20612-97 |
Soft Iron |
|
90 |
| Octagonal Ring Gasket |
HG20633-97 |
Low Carbon Steel |
10# |
120 |
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SH3403-96 |
304SS |
0Cr18Ni9 |
160 |
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ANSI B16.20 |
316SS |
0Cr17Ni12Mo2 |
160 |
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410SS |
0Cr13 |
170 |
Demensions of spiral wound gasket for ASME B16.5 flanges according to ASME B16.20
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Class 150
| NPS |
Inner Ring |
Sealing Element |
Outer Ring |
| D1 |
D2 |
D3 |
D4 |
| 1/2 |
14.2 |
19.1 |
31.8 |
47.8 |
| 3/4 |
20.6 |
25.4 |
39.6 |
57.2 |
| 1 |
26.9 |
31.8 |
47.8 |
66.8 |
| 1 ¼ |
38.1 |
47.8 |
60.5 |
76.2 |
| 1 ½ |
44.5 |
54.1 |
69.9 |
85.9 |
| 2 |
55.6 |
69.9 |
85.9 |
104.9 |
| 2 ½ |
66.5 |
82.6 |
98.6 |
124 |
| 3 |
81 |
101.6 |
120.7 |
136.7 |
| 4 |
106.4 |
127 |
149.4 |
174.8 |
| 5 |
131.8 |
155.7 |
177.8 |
196.9 |
| 6 |
157.2 |
182.6 |
209.6 |
222.3 |
| 8 |
215.9 |
233.4 |
263.7 |
279.4 |
| 10 |
268.2 |
287.3 |
317.5 |
339.9 |
| 12 |
317.5 |
339.9 |
374.7 |
409.7 |
| 14 |
349.3 |
371.6 |
406.4 |
450.9 |
| 16 |
400.1 |
422.4 |
463.6 |
514.4 |
| 18 |
449.3 |
474.7 |
527.1 |
549.4 |
| 20 |
500.1 |
525.5 |
577.9 |
606.6 |
| 24 |
603.3 |
628.7 |
685.8 |
717.6 |
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Class 300
| NPS |
Inner Ring |
Sealing Element |
Outer Ring |
| D1 |
D2 |
D3 |
D4 |
| 1/2 |
14.2 |
19.1 |
31.8 |
54.1 |
| 3/4 |
20.6 |
25.4 |
39.6 |
66.8 |
| 1 |
26.9 |
31.8 |
47.8 |
73.2 |
| 1 ¼ |
38.1 |
47.8 |
60.5 |
82.6 |
| 1 ½ |
44.5 |
54.1 |
69.9 |
95.3 |
| 2 |
55.6 |
69.9 |
85.9 |
111.3 |
| 2 ½ |
66.5 |
82.6 |
98.6 |
130.3 |
| 3 |
81 |
101.6 |
120.7 |
149.4 |
| 4 |
106.4 |
127 |
149.4 |
181.1 |
| 5 |
131.8 |
155.7 |
177.8 |
215.9 |
| 6 |
157.2 |
182.6 |
209.6 |
251 |
| 8 |
215.9 |
233.4 |
263.7 |
308.1 |
| 10 |
268.2 |
287.3 |
317.5 |
362 |
| 12 |
317.5 |
339.9 |
374.7 |
422.4 |
| 14 |
349.3 |
371.6 |
406.4 |
485.9 |
| 16 |
400.1 |
422.4 |
463.6 |
539.8 |
| 18 |
449.3 |
474.7 |
527.1 |
596.9 |
| 20 |
500.1 |
525.6 |
577.9 |
654.1 |
| 24 |
603.3 |
628.7 |
685.8 |
774.7 |
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Class 400
| NPS |
Inner Ring |
Sealing Element |
Outer Ring |
| D1 |
D2 |
D3 |
D4 |
| 1/2 |
14.2 |
19.1 |
31.8 |
54.1 |
| 3/4 |
20.6 |
25.4 |
39.6 |
66.8 |
| 1 |
26.9 |
31.8 |
47.8 |
73.2 |
| 1 ¼ |
38.1 |
47.8 |
60.5 |
82.6 |
| 1 ½ |
44.5 |
54.1 |
69.9 |
95.3 |
| 2 |
55.6 |
69.9 |
85.9 |
111.3 |
| 2 ½ |
66.5 |
82.6 |
98.6 |
130.3 |
| 3 |
81 |
101.6 |
120.7 |
149.4 |
| 4 |
102.6 |
120.7 |
149.4 |
177.8 |
| 5 |
128.3 |
147.6 |
177.8 |
212.9 |
| 6 |
154.9 |
174.8 |
209.6 |
247.7 |
| 8 |
205.7 |
225.6 |
263.7 |
304.8 |
| 10 |
255.3 |
274.6 |
317.5 |
358.9 |
| 12 |
307.3 |
327.2 |
374.7 |
419.1 |
| 14 |
342.9 |
362 |
406.4 |
482.6 |
| 16 |
389.9 |
412.8 |
463.6 |
536.7 |
| 18 |
438.2 |
469.9 |
527.1 |
593.9 |
| 20 |
489 |
520.7 |
577.9 |
647.7 |
| 24 |
590.6 |
628.7 |
685.8 |
768.4 |
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Class 600
| NPS |
Inner Ring |
Sealing Element |
Outer Ring |
| D1 |
D2 |
D3 |
D4 |
| 1/2 |
14.2 |
19.1 |
31.8 |
54.1 |
| 3/4 |
20.6 |
25.4 |
39.6 |
66.8 |
| 1 |
26.9 |
31.8 |
47.8 |
73.2 |
| 1 ¼ |
38.1 |
47.8 |
60.5 |
82.6 |
| 1 ½ |
44.5 |
54.1 |
69.9 |
95.3 |
| 2 |
55.6 |
69.9 |
85.9 |
111.3 |
| 2 ½ |
66.5 |
82.6 |
98.6 |
130.3 |
| 3 |
78.7 |
101.6 |
120.7 |
149.4 |
| 4 |
102.6 |
120.7 |
149.4 |
193.8 |
| 5 |
128.3 |
147.6 |
177.8 |
241.3 |
| 6 |
154.9 |
174.8 |
209.6 |
266.7 |
| 8 |
205.7 |
225.6 |
263.7 |
320.8 |
| 10 |
255.3 |
274.6 |
317.5 |
400.1 |
| 12 |
307.3 |
327.2 |
374.7 |
457.2 |
| 14 |
342.9 |
362 |
406.4 |
492.3 |
| 16 |
389.9 |
412.8 |
463.6 |
565.2 |
| 18 |
438.2 |
469.9 |
527.1 |
612.9 |
| 20 |
489 |
520.7 |
577.9 |
682.8 |
| 24 |
590.6 |
628.7 |
685.8 |
790.7 |
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Class 900
| NPS |
Inner Ring |
Sealing Element |
Outer Ring |
| D1 |
D2 |
D3 |
D4 |
| 1/2 |
14.2 |
19.1 |
31.8 |
63.5 |
| 3/4 |
20.6 |
25.4 |
39.6 |
69.9 |
| 1 |
26.9 |
31.8 |
47.8 |
79.5 |
| 1 ¼ |
33.3 |
39.6 |
60.5 |
88.9 |
| 1 ½ |
41.4 |
47.8 |
69.9 |
98.6 |
| 2 |
52.3 |
58.7 |
85.9 |
143 |
| 2 ½ |
63.5 |
69.9 |
98.6 |
165.1 |
| 3 |
78.7 |
95.3 |
120.7 |
168.4 |
| 4 |
102.6 |
120.7 |
149.4 |
206.5 |
| 5 |
128.3 |
147.6 |
177.8 |
247.7 |
| 6 |
154.9 |
174.8 |
209.6 |
289.1 |
| 8 |
196.9 |
222.3 |
257.3 |
358.9 |
| 10 |
246.1 |
276.4 |
311.2 |
435.1 |
| 12 |
292.1 |
323.9 |
368.3 |
498.6 |
| 14 |
320.8 |
355.6 |
400.1 |
520.7 |
| 16 |
374.7 |
412.8 |
457.2 |
574.8 |
| 18 |
425.5 |
463.6 |
520.7 |
638.3 |
| 20 |
482.6 |
520.7 |
571.5 |
698.5 |
| 24 |
590.6 |
628.7 |
679.5 |
838.2 |
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Class 1500
| NPS |
Inner Ring |
Sealing Element |
Outer Ring |
| D1 |
D2 |
D3 |
D4 |
| 1/2 |
14.2 |
19.1 |
31.8 |
63.5 |
| 3/4 |
20.6 |
25.4 |
39.6 |
69.9 |
| 1 |
26.9 |
31.8 |
47.8 |
79.5 |
| 1 ¼ |
33.3 |
39.6 |
60.5 |
88.9 |
| 1 ½ |
41.4 |
47.8 |
69.9 |
98.6 |
| 2 |
52.3 |
58.7 |
85.9 |
143 |
| 2 ½ |
63.5 |
69.9 |
98.6 |
165.1 |
| 3 |
78.7 |
92.2 |
120.7 |
174.8 |
| 4 |
97.8 |
117.6 |
149.4 |
209.6 |
| 5 |
124.5 |
143 |
177.8 |
254 |
| 6 |
147.3 |
171.5 |
209.6 |
282.7 |
| 8 |
196.9 |
215.9 |
257.3 |
352.6 |
| 10 |
246.1 |
266.7 |
311.2 |
435.1 |
| 12 |
292.1 |
323.9 |
368.3 |
520.7 |
| 14 |
320.8 |
362 |
400.1 |
577.9 |
| 16 |
374.7 |
406.4 |
457.2 |
641.4 |
| 18 |
425.5 |
463.6 |
520.7 |
704.9 |
| 20 |
476.3 |
514.4 |
571.5 |
755.7 |
| 24 |
577.9 |
616 |
679.5 |
901.7 |
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Class 2500
| NPS |
Inner Ring |
Sealing Element |
Outer Ring |
| D1 |
D2 |
D3 |
D4 |
| 1/2 |
14.2 |
19.1 |
31.8 |
69.9 |
| 3/4 |
20.6 |
25.4 |
39.6 |
76.2 |
| 1 |
26.9 |
31.8 |
47.8 |
85.9 |
| 1 ¼ |
33.3 |
39.6 |
60.5 |
104.9 |
| 1 ½ |
41.4 |
47.8 |
69.9 |
117.6 |
| 2 |
52.3 |
58.7 |
85.9 |
146 |
| 2 ½ |
63.5 |
69.9 |
98.6 |
168.4 |
| 3 |
78.7 |
92.2 |
120.7 |
196.9 |
| 4 |
97.8 |
117.6 |
149.4 |
235 |
| 5 |
124.5 |
143 |
177.8 |
279.4 |
| 6 |
147.3 |
171.5 |
209.6 |
317.5 |
| 8 |
196.9 |
215.9 |
257.3 |
387.4 |
| 10 |
246.1 |
270 |
311.2 |
476.3 |
| 12 |
292.1 |
317.5 |
368.3 |
549.4 |
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