SPIRAL WOUND GASKETS
SEATING STRESS RANGE ( To ensure leak-proof connection )
| FILLER | SINGLE-SIDED ENCLOSED ( style RS ) | DOUBLE-SIDED ENCLOSED ( style RSI ) | ||||
| SEATING STRESS (20°C) | SEATING STRESS (20°C) | |||||
| MIN [N/mm2] | OPT. [N/mm2] | MAX. [N/mm2] | MIN [N/mm2] | OPT. [N/mm2] | MAX. [N/mm2] | |
| Graphite | 50 | 95 | 180 | 50 | 122 | 300 |
| PTFE | 50 | 80 | 130 | 50 | 110 | 250 |
GUIDE RINGS: Guide Rings are normally carbon steel ASTM A -285 -82 GR-C or stainless steel 316.
Inner ring material usually matches the winding metal
FILLER MATERIAL SELECTION
| MATERIAL | TEMPERATURE [ °C ] | MAX. OPERATING PRESSURE [BAR] | GAS TIGHTNESS | APPLICATION | |||
| Graphite | min | -200 | max | 500 | 250 | Good | Aggresive media |
| PTFE | -200 | 240 | 100 | Good | Aggresive media | ||
MATERIALS CHART ( *10mm steel ball indenter with 3000kg load )
| (TRADE NAME) | DIN SPECIFICATION | DIN MATERIAL NR. | AISI UNS | B.S ASTM | HARDNESS HV 10* | TEMP. [°C] | VOLUMETRIC MASS [G/CM3] | |
| MIN. | MAX. | |||||||
| Soft Iron (Armco) | – | 1.1003 | – | – | 90 – 100 | -60 | 500 | 7.85 |
| Steel (LCS) | RSt.37.2 | 1.0038 | – | – | 100 – 130 | -40 | 500 | 7.85 |
| Stainless Steel 304 | X5CrNi 18 | 1.4301 | 304 | 304S15/16/31 | 130 – 180 | -250 | 550 | 7,9 |
| Stainless Steel 304 L | X2CrNi 189 | 1.4306 | 304L | 304S11 | 130 – 190 | -250 | 550 | 7,9 |
| Stainless Steel 309 | X15CrNiMo 2012 | 1.4828 | 309 | 309S24 | 130 – 190 | -100 | 1000 | 7,9 |
| Stainless Steel 316 | X5CrNiMo 1810 | 1.4401 | 316 | 316S31/33 | 130 – 180 | -100 | 550 | 7,9 |
| Stainless Steel 316 L | X2CrNiMo 1810 | 1.4404 | 316L | 316S11/13 | 130 – 190 | -100 | 550 | 7,9 |
| Stainless Steel 316 Ti | X10CrNiMoTi 1810 | 1.4571 | 316Ti | 320S31 | 130 – 190 | -100 | 550 | 7,8 |
| Stainless Steel 321 | X10CrNiTi 189 | 1.4541 | 321 | 321S12/49/87 | 130 – 190 | -250 | 550 | 7,9 |
| Stainless Steel 347 | X10CrNiNb 189 | 1.4550 | 347 | 347S31 | 130 – 190 | -250 | 550 | 7,9 |
| Nickel 200 | Ni 99.2 | 2,4066 | NO2200 | 3072-76 NA11 | 90 – 120 | -250 | 600 | 8,9 |
| Monel 400 | NiCu 30 Fe | 2.4360 | NO4400 | 3072-76 NA13 | 110 – 150 | -125 | 600 | 8,8 |
| Inconel 600 | NiCr 15 Fe | 2.4816 | NO6600 | 3072-76 NA14 | 120 – 180 | -100 | 950 | 8,4 |
| Incoloy 800 | X10NiCrAITi 3220 | 1.4876 | NO8800 | 3072-76 NA15 | 140 – 220 | -100 | 850 | 8,4 |
| Incoloy 825 | NiCR 21 Mo | 2.4858 | NO8825 | 3072-76 NA 16 | 120 – 180 | -100 | 450 | 8,14 |
| Hastelloy B2 | NMo 28 | 2.4617 | N10665 | – | 170 – 230 | -200 | 450 | 9,2 |
| Hasetlloy C276 | ‘NiMo 16Cr15W | 2.4819 | N10276 | – | 170 – 230 | -200 | 450 | 8.9 |
| Titanium | Ti 99,8 | 3.7025 | – | – | 110 – 140 | -250 | 500 | 4,5 |