DIN-Series Silicone Union Gasket

A molded silicone elastomer union seal ring designed to seat in the recessed face groove of a DIN 11851 union male part against a mating DIN liner. The primary series schedule lists DN20 to DN100, while the embedded DIN seal chart spans DN10 to DN150.

Connection	DIN union male-end seal groove against DIN liner face
Seal Profile	Profiled DIN union seal ring (embedded chart shows D-section with A, B, C; photos also show lipped ring)
Seal Material	Silicone elastomer (blue or red)
Size Range	DN10–DN150
Ring geometry	D-section annular DIN union seal ring

Size

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DIN Union Groove Sealing Role

This silicone union gasket seats inside the annular recess of a DIN 15 union male end and compresses against the flat sealing face of a mating DIN 14, 14S, 14R, or 14B liner when tightened by a DIN 13R slotted round nut.

Silicone Compound and Color Variants

The primary series specification is titled Blue Silicone Gasket For DIN Union, while a companion reference page presents a Red Silicone Seal For DIN Union Seal. Although the series parameter table prints a shared multi-material string (Viton/EPDM/Silicone), this catalog entry is dedicated specifically to the silicone elastomer version.

Dimensional Chart Coverage vs. Text Table

While the series schedule lists a nominal size range of DN20 to DN100, the embedded dimensional drawing tabulates 12 metric sizes from DN10 through DN150: inner diameter A spans 12 mm to 150 mm, outer diameter B spans 20 mm to 162 mm, and section thickness C is 5 mm (DN10–DN100) or 5.5 mm (DN125–DN150).

Cross-Section Profile Checks

Note that the embedded dimensional diagram illustrates a rounded D-section ring, whereas several gallery photographs display a stepped lip-type DIN seal. Confirm whether a D-section or flanged-lip DIN profile is required for your union groove.

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