DIN 11851 Sanitary Gaskets

Deutsches Institut fur Normung (DIN) Fittings


DIN Gaskets

DIN gaskets are designed specifically for DIN fittings. The underside of the gasket is flat and butts up against the welding liner's flat face, while the top side has a rounded edge which fits nicely into the groove of the welding male. The round nut then joins the liner and male compressing the gasket creating a tight seal. Gaskets are matched to other DIN fittings based on the metric sizing (Ie: A 40mm gasket is used for any DIN fitting that is 40mm, including any Imperial (inch-based) fittings that are also listed as 40mm).

What type of material should I use?

While we are prohibited from recommending a gasket type, we do offer a Chemical Resistance Chart (new window) that matches the resistance level of gasket materials to the different chemicals / food products you may be using. We may suggest using an A- or B-rated gasket for your particular application.


Incorrect sizing is common with DIN 11851 fittings. Please review our DIN 11851 Guide for assistance in sizing your DIN 11851 fitting.

Items 1-25 of 30

Set Descending Direction
per page
SKU Item Price
DIN-PTFE-400-DN100 DIN Gasket | 100mm (4 in) - PTFE
DIN-BUNA-400-DN100 DIN Gasket | 100mm (4 in.) - BUNA
DIN-EPDM-400-DN100 DIN Gasket | 100mm (4 in.) - EPDM
DIN-FKM-400-DN100 DIN Gasket | 100mm (4 in.) - FKM
DIN-SIL-400-DN100 DIN Gasket | 100mm (4 in.) - Silicone
DIN-PTFE-100-DN25 DIN Gasket | 25mm (1 in) - PTFE
DIN-BUNA-100-DN25 DIN Gasket | 25mm (1 in.) - BUNA
DIN-EPDM-100-DN25 DIN Gasket | 25mm (1 in.) - EPDM
DIN-FKM-100-DN25 DIN Gasket | 25mm (1 in.) - FKM
DIN-SIL-100-DN25 DIN Gasket | 25mm (1 in.) - Silicone
DIN-PTFE-150-DN40 DIN Gasket | 40mm (1.5 in) - PTFE
DIN-BUNA-150-DN40 DIN Gasket | 40mm (1.5 in.) - BUNA
DIN-EPDM-150-DN40 DIN Gasket | 40mm (1.5 in.) - EPDM
DIN-FKM-150-DN40 DIN Gasket | 40mm (1.5 in.) - FKM
DIN-SIL-150-DN40 DIN Gasket | 40mm (1.5 in.) - Silicone
DIN-PTFE-200-DN50 DIN Gasket | 50mm (2 in) - PTFE
DIN-BUNA-200-DN50 DIN Gasket | 50mm (2 in.) - BUNA
DIN-EPDM-200-DN50 DIN Gasket | 50mm (2 in.) - EPDM
DIN-FKM-200-DN50 DIN Gasket | 50mm (2 in.) - FKM
DIN-SIL-200-DN50 DIN Gasket | 50mm (2 in.) - Silicone
DIN-PTFE-250-DN65 DIN Gasket | 65mm (2.5 in) - PTFE
DIN-BUNA-250-DN65 DIN Gasket | 65mm (2.5 in.) - BUNA
DIN-EPDM-250-DN65 DIN Gasket | 65mm (2.5 in.) - EPDM
DIN-FKM-250-DN65 DIN Gasket | 65mm (2.5 in.) - FKM
DIN-SIL-250-DN65 DIN Gasket | 65mm (2.5 in.) - Silicone

Items 1-25 of 30

Set Descending Direction
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Return Policy

Glacier Tanks will accept returns of website standard stocking items, but only if:

  1. The item is new, unused, and in resalable condition;
  2. You notify Glacier Tanks and request a return authorization within 30 days of your receipt of the item;
  3. You return the item to Glacier Tanks, postage/shipping prepaid within 5 days of Glacier Tanks' return authorization (RMA);

Once your items have been received by Glacier Tanks and verified to be unused, we will refund your purchase price, less shipping costs. Returns will incur a 15% restocking fee. Return shipping costs are your responsibility and shall not be paid by Glacier Tanks.

The following items are non-returnable:

  • Special or Discounted items - labeled by button color:
    • Discontinued
    • Damaged
    • Non-conforming
    • Refurbished
    • Special Order
    • Drop Ship
    • Build-to-Order
  • Custom order
  • All Gaskets & Seals

Please be sure you understand and agree to any drawings supplied to you prior to purchase of custom or special order items. Payment of deposits for custom or special order items indicates your approval and acceptance of such custom or special order items.

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