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WELCOME to Cixi Dongfeng Sealing&packing web site.
Here you will find information on many different types of sealing gaskets, packings and materials which are in common used in oil chemical, metallurgy, electric power, ship-building, paper making and fertilizer industries today.
Please feel free to send us comments, request technical information or email us.
Your comments and feedback are important to us. |
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一、构造
缠绕式垫片由“V”形(或“W”形) 金属带与非金属带相互重迭，连续缠绕而成，在始、末端用点焊方式将金属带固定。
二、性能及特点
1、 适用的工况范围宽。能耐高温、高压和适应超低温或真空下的使用条件。通过改变垫片的材料组合，可解决各种介质对垫片的化学腐蚀问题。
2、应力补偿能力强。在温度、压力波动频繁的工位上，密封性能稳定、可靠。
3、密封性能优良。
4、对与垫片接触的法兰密封而的表面精度要求不高。
5、安装方便，垫片预紧压力较低。
三、垫片种类
1、A、缠绕片垫片分四种形式：基本型、带内环型、带外环型、带内外环型。
B、热交换器用缠绕式垫片一般分：基本型及带内外环型。
2、通常使用的材料：
A、钢带：08F、0Cr18Ni9(304)、0Cr18Ni9Ti、1Cr18Ni9Ti(321)、0Cr17Ni12、M02(316)、00Cr17Ni14M02(316L)
B、内外环用(冷轧)钢板：外环：低碳钢、0Cr13、oCr18Ni9 内环：通常与钢带材质相同或协商确定。
C、非金属带：柔性石墨、特制石棉、聚四氟乙烯、非石棉纸。
四、使用范围
1、使用温度：-196℃-700℃(氧化性介质中不高于600℃)
2、使用压力： ≤25MPa
3、垫片系数：m=2.5-4
4、最小预紧比压：y=68MPa
5、最大加工尺寸：-2800mm |
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带内环型
内环：低碳钢3.2mm
不锈钢：3.0mm
垫片厚度：4.5mm |
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带外环型
外环：低碳钢3.2mm
不锈钢：3.0mm
垫片厚度：4.5mm |
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带内外环型
外环：低碳钢3.2mm
不锈钢：3.0mm
垫片厚度：4.5mm |
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150 |
300 |
400 |
600 |
900 |
a1500 |
2500 |
D2 |
D3 |
D4 |
D2 |
D3 |
D4 |
D2 |
D3 |
D4 |
D2 |
D3 |
D4 |
D2 |
D3 |
D4 |
D2 |
D3 |
D4 |
D2 |
D3 |
D4 |
1/2B |
19.0 |
31.8 |
47.8 |
19.0 |
31.8 |
54.1 |
19.0 |
31.8 |
54.1 |
19.0 |
31.8 |
54.1 |
19.0 |
31.8 |
63.5 |
19.0 |
31.8 |
63.5 |
19.0 |
31.8 |
69.8 |
3/4 |
25.4 |
39.6 |
57.2 |
25.4 |
39.6 |
66.8 |
25.4 |
39.6 |
66.8 |
25.4 |
39.6 |
66.8 |
25.4 |
39.6 |
69.8 |
25.4 |
39.6 |
69.8 |
25.4 |
39.6 |
76.2 |
1 |
31.8 |
47.8 |
66.8 |
31.8 |
47.8 |
73.2 |
31.8 |
47.8 |
73.2 |
31.8 |
47.8 |
73.2 |
31.8 |
47.8 |
79.5 |
31.8 |
47.8 |
79.5 |
31.8 |
47.8 |
85.8 |
11/4 |
47.8 |
60.4 |
76.2 |
47.8 |
60.4 |
82.6 |
47.8 |
60.4 |
82.6 |
47.8 |
60.4 |
82.6 |
39.6 |
60.4 |
88.9 |
39.6 |
60.4 |
88.9 |
39.6 |
60.4 |
104.9 |
11/2 |
54.1 |
69.8 |
85.8 |
54.1 |
69.8 |
95.2 |
54.1 |
69.8 |
95.2 |
54.1 |
69.8 |
95.2 |
47.8 |
69.8 |
98.6 |
47.8 |
69.8 |
98.6 |
47.8 |
69.8 |
117.6 |
2 |
69.8 |
85.8 |
104.9 |
69.8 |
85.8 |
111.2 |
69.8 |
85.8 |
111.2 |
69.8 |
85.8 |
111.2 |
58.7 |
85.8 |
143.0 |
58.7 |
85.8 |
143.0 |
58.7 |
85.8 |
146.0 |
2 1/2 |
82.6 |
98.6 |
124.0 |
82.6 |
98.6 |
130.3 |
82.6 |
98.6 |
130.3 |
82.6 |
98.6 |
130.3 |
69.8 |
98.6 |
165.1 |
69.8 |
98.6 |
165.1 |
69.8 |
98.6 |
168.4 |
3 |
101.6 |
120.6 |
136.6 |
101.6 |
120.6 |
149.4 |
101.6 |
120.6 |
149.4 |
101.6 |
120.6 |
149.4 |
95.2 |
120.6 |
168.4 |
92.2 |
120.6 |
174.8 |
92.2 |
120.6 |
196.8 |
4 |
127.0 |
149.4 |
174.8 |
127.0 |
149.4 |
181.1 |
120.6 |
149.4 |
177.8 |
120.6 |
149.4 |
193.8 |
120.6 |
149.4 |
209.6 |
117.6 |
149.4 |
209.6 |
117.6 |
149.4 |
235.0 |
5 |
155.7 |
177.8 |
196.8 |
155.7 |
177.8 |
215.9 |
147.6 |
177.8 |
212.8 |
147.6 |
177.8 |
241.3 |
147.6 |
177.8 |
247.6 |
143.0 |
177.8 |
254.0 |
143.0 |
177.8 |
279.4 |
6 |
182.6 |
209.6 |
222.2 |
182.6 |
209.6 |
251.0 |
174.8 |
209.6 |
247.6 |
174.8 |
209.6 |
266.7 |
174.8 |
209.6 |
289.0 |
171.4 |
209.6 |
282.7 |
171.4 |
209.6 |
317.5 |
8 |
233.4 |
263.6 |
279.4 |
233.4 |
263.6 |
308.1 |
255.6 |
263.6 |
604.8 |
255.6 |
263.6 |
320.8 |
222.2 |
257.3 |
358.9 |
215.9 |
257.3 |
352.6 |
216.9 |
257.3 |
387.4 |
10 |
287.3 |
317.5 |
339.8 |
287.3 |
317.5 |
362.0 |
274.6 |
317.5 |
358.9 |
274.6 |
317.5 |
400.0 |
276.4 |
311.2 |
435.1 |
266.7 |
311.2 |
435.1 |
270.0 |
311.2 |
476.2 |
12 |
339.8 |
374.6 |
409.7 |
339.8 |
374.6 |
422.4 |
327.2 |
374.6 |
419.1 |
327.2 |
374.6 |
457.2 |
323.8 |
368.3 |
498.6 |
323.8 |
368.3 |
520.7 |
317.5 |
368.3 |
549.4 |
14 |
371.6 |
406.4 |
450.8 |
371.6 |
406.4 |
485.9 |
362.0 |
406.4 |
482.6 |
362.0 |
406.4 |
492.2 |
355.6 |
400.0 |
520.7 |
362.0 |
400.0 |
577.8 |
- |
- |
- |
16 |
422.4 |
463.6 |
514.1 |
422.4 |
463.6 |
539.8 |
412.8 |
463.6 |
536.7 |
412.8 |
463.6 |
565.2 |
412.8 |
457.2 |
574.8 |
406.4 |
457.2 |
641.1 |
- |
- |
- |
18 |
474.7 |
527.0 |
549.4 |
474.7 |
527.0 |
596.9 |
469.9 |
527.0 |
593.8 |
469.9 |
527.0 |
612.9 |
463.6 |
520.7 |
638.3 |
463.6 |
520.7 |
704.8 |
- |
- |
- |
20 |
525.5 |
577.8 |
606.6 |
525.5 |
577.8 |
654.0 |
520.7 |
577.8 |
647.7 |
520.7 |
577.8 |
682.8 |
520.7 |
571.5 |
698.5 |
514.4 |
571.5 |
755.6 |
- |
- |
- |
24 |
628.6 |
685.8 |
717.6 |
628.6 |
685.8 |
774.7 |
628.6 |
685.8 |
768.4 |
628.6 |
685.8 |
790.7 |
628.6 |
679.4 |
838.2 |
616.0 |
679.4 |
901.7 |
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- |
- |
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