Spiral Shield Gaskets
Spiral shields are made from hardened beryllium copper or stainless steel and are characterized by excellent fatigue strength and elasticity. If the beryllium copper spiral is additionally tin-plated, it also offers excellent corrosion protection in contact with aluminium in a saline environment. Stainless steel shields are used when the emphasis is on corrosion protection and not on conductive properties.
Compression force
The spiral shields are available with three different elasticity/tension forces (as listed below). The optimal compression of the shield is 25 % of the spiral diameter.
Mounting
The spirals are mounted in a standard O-ring groove. The groove should be at least 35% wider than the gasket diameter. The groove depth should be 75% of the groove diameter.
Material-Mix: see table | Recommended mounting dimensions mm | |||||
Diameter | Standard Force* | Moderate Force | Low Force | L | G | W |
0,9 | 4007.XXYY.009 | 4107.XXYY.009**/*** | -- | 0,59 | 1,17 | 0,84 |
1,2 | 4007.XXYY.012 | 4107.XXYY.012** | -- | 0,89 | 1,60 | 1,14 |
1,6 | 4007.XXYY.016 | 4107.XXYY.016 | 4207.XXYY.016 | 1,17 | 2,39 | 1,52 |
1,8 | 4007.XXYY.018 | 4107.XXYY.018 | 4207.XXYY.018 | 1,35 | 2,39 | 1,52 |
2 | 4007.XXYY.020 | 4107.XXYY.020 | 4207.XXYY.020 | 1,50 | 2,77 | 1,91 |
2,4 | 4007.XXYY.024 | 4107.XXYY.024 | 4207.XXYY.024 | 1,78 | 3,18 | 2,29 |
2,6 | 4007.XXYY.026 | 4107.XXYY.026 | 4207.XXYY.026 | 1,96 | 3,58 | 2,52 |
2,8 | 4007.XXYY.028 | 4107.XXYY.028 | 4207.XXYY.028 | 2,08 | 3,96 | 2,67 |
3,2 | 4007.XXYY.032 | 4107.XXYY.032 | 4207.XXYY.032 | 2,39 | 4,34 | 3,07 |
3,5 | 4007.XXYY.035 | 4107.XXYY.035 | 4207.XXYY.035 | 2,64 | 4,75 | 3,40 |
3,6 | 4007.XXYY.036 | 4107.XXYY.036 | 4207.XXYY.036 | 2,67 | 4,75 | 3,46 |
4,4 | 4007.XXYY.040 | 4107.XXYY.040 | 4207.XXYY.040 | 3,25 | 5,95 | 4,19 |
4,8 | 4007.XXYY.048 | 4107.XXYY.048 | 4207.XXYY.048 | 3,56 | 6,35 | 4,60 |
| 6,4 | 4007.XXYY.064 | 4107.XXYY.064 | 4207.XXYY.064 | 4,70 | 8,71 | 6,10 |
| 7,9 | 4007.XXYY.079 | 4107.XXYY.079 | 4207.XXYY.079 | 5,94 | 10,72 | 7,62 |
| 9,5 | 4007.XXYY.095 | 4107.XXYY.095 | 4207.XXYY.095 | 7,11 | 1,70 | 9, |
| 12,7 | 4007.XXYY.127 | 4107.XXYY.127 | 4207.XXYY.127 | 9,53 | 16,66 | 12,32 |
XX: Inlay. YY: Spring material, see material table
Moderate and low force spirals are supplied with silicone inlay as standard. All Standard Force spirals are only available without silicone inlay.
** These sizes cannot be supplied with silicone inlay
* * * These sizes cannot be supplied in stainless steel
Einlage (XX) | Federmaterial (YY) | |
00 - ohne Einlage | 20 - CuBe | |
32 - Silikoneinlage | 22 - Edelstahl | |
| 26 - CuBe verzinnt | |
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