C&N Industiral,huitong limtied is professional pipe,flange and fitting manufacturer,our products approved by PDO, SADARA, SWCC,PDO etc.
C&N is a professional pipe fittings & flange manufacturer in China,We can produce high quality spiral wound gasket.
Place of Origin: | Hebei China (Mainland) | Brand Name: | c&n | Model Number: | |
| Material: | Metal | Shape: | Ring Gasket | Standard or Nonstandard: | Standard |
| Standard: | ASME B 16.20,API 601 | Packaging Detail: | wooden case | Delivery Detail: | 15-35days |
What is the standard for a spiral wound gasket?
The standard manufacturing thicknesses for spiral wound gaskets are:3,2mm; 4,5mm; 6,5mm (measured across metallic strip not including the filler, which protrudes slightly beyond the metal). The tolerance of the gasket diameters (d1, d2, d3, d4, s, s1) are stipulated by ASME B 16.20 and EN 1514-2 standards.
Spiral wound gasket dimensions to suit DIN flanges
| SIZE | INNER RING INSIDE DIA | CENTRE RING OD |
|---|---|---|
| 100 | 114 | 162 |
| 125 | 140 | 192 |
| 150 | 168 | 217 |
| 175 | 189 | 247 |
Specifications of Graphite spiral wound gasket
(1)working temperature:-196~700degree
(2)working pressure:25Mpa
(3)Gasket coefficuent:m=2.5~4
(4)Min pre-tightening specific pressure:y=68Mpa
(5)Max.machinable size:~2800mm
Spiral wound gaskets type
NO. | type | Thickess(mm) | |
| 1511 | Basic Form | 3.2 | 4.5 |
| 1512 | With inner ring | 3.2 | 4.5 |
| 1513 | With outer ring | 3.2 | 4.5 |
| 1514 | With inner ring and out ring | 3.2 | 4.5 |
Structure type
Filler | Hoop | IR | OR |
| Asbestos | SUS 304 | CS | CS |
| Graphite | SUS 316 | SUS 304 | SUS 304 |
| PTFE | SUS 316L | SUS 316 | SUS 316 |
The table below may be used for selected material of inner ring and winding metal.
Trade Name | AISI | Hardness(HB/HV) | °C |
| 304 Stainless steel | 304 | 130-180 | -220~+550 |
| 316 Stainless steel | 316 | 130-180 | -100~+550 |
| 316L Stainless steel | 316L | 130-190 | -100~+550 |
The outer ring is generally manufactured from carbon steel with an anti-corronsion treatment.
The table below may be used for determining the correct filler.
Filler | °C | Max Operating Pressure(Kg/cm2) | |
| 304 Stainless steel | -200~+550 | 250 | |
| 316 Stainless steel | -150~+450 | 100 | |
| 316L Stainless steel | -240~+260 | 100 | |
