GINSEAL lens gasket is a line contact seal for use in high-pressure piping systems and in pressure vessel heads. The lens cross-section is a spherical gasket surface and requires special machining on the flanges. Since the contact area is very small and gasket seating pressures are very high, the gaskets will seat with a small bolt load. Normally the gasket materials should be softer than the flange. In ordering lens gaskets, complete drawings and material specifications must be supplied.
Most popular metal lens gaskets are manufactured according to the standard of DIN 2696, from this standard, we can provide lens gaskets with dimensions from DN10 PN63 up to DN300 PN400.
Besides DIN 2696, there are also other standards that describe particular shapes and dimensions in detail.
Ginseal also provides non-standards lens metal gasket based on the provided drawings.
Unlike Ring type joint gaskets, Lens gaskets are reusable, as the sealing effect is generally achieved by elastic deformation of the surfaces.
Details About Lens Gaskets
- Item No.: JSG-RJL
- Lens gaskets are normally used as high-pressure gaskets.
- Lens gaskets are stress-resistant.
- The seating area of the lens assembled in the turned flange groove
- Increases by increasing bolt load.
- One disadvantage, however, is that under high pressure and
- Temperatures, the circumference of the gasket lens may bulge which
- This leads to loss of initial load.
- Other designs are available on request.
Material
Soft Iron, Low Carbon Steel, Stainless Steel 304, Stainless Steel 304L,
Stainless Steel 316, Stainless Steel 316L, Stainless Steel 321, Stainless
Steel 347, Stainless Steel 410, Aluminium, Copper, Brass, Nickel 200,
Monel 400, Inconel 600, Hastelloy B2, Titanium (see more information
In our products catalog)
| Material | Identification | Material No. | Hardness | Temperature (oC) | Density | |
|---|---|---|---|---|---|---|
| Min. | Max. | (gr/cm2) | ||||
| Soft Iron | D | – | 90 | -40 | 500 | 7.85 |
| Low Carbon Steel | S | – | 120 | -40 | 500 | 7.85 |
| Stainless Steel 304 | 304SS | 1.4301 | 160 | -250 | 550 | 7.90 |
| Stainless Steel 304L | 304L SS | 1.4306 | 160 | -250 | 550 | 7.90 |
| Stainless Steel 316 | 316SS | 1.4401 | 160 | -100 | 550 | 7.90 |
| Stainless Steel 316L | 316L SS | 1.4404 | 160 | -100 | 550 | 7.90 |
| Stainless Steel 321 | 321SS | 1.4541 | 160 | -250 | 550 | 7.90 |
| Stainless Steel 347 | 347SS | 1.4450 | 160 | -250 | 500 | 7.90 |
| Stainless Steel 410 | 410SS | 1.4000 | 170 | -20 | 850 | 7.80 |
| Aluminum | Al | 3.0255 | 30 | -250 | 300 | 2.71 |
| Copper | Cu | 2.0090 | ca.80 | -250 | 400 | 8.90 |
| Brass | CuZn37 | 2.0321 | ca.60 | -100 | 350 | 8.50 |
| Nickel 200 | Ni200 | 2.4066 | 110 | -250 | 600 | 8.90 |
| Monel 400 | 400 | 2.4360 | 150 | -125 | 600 | 8.80 |
| Inconel 600 | 600 | 2.4816 | 150 | -100 | 950 | 8.40 |
| Hastelloy B2 | B2 | 2.4617 | 230 | -200 | 450 | 9.20 |
| Titanium | Ti | 3.7025 | ca.215 | -250 | 350 | 4.50 |
Marking (standard):
– Manufacturer
– Nominal Size – Pressure Range
– Material
– Manufactured to (standard)
Packages & Shipment
