Flat seal, (NBR with aramid fibres), connection 3 - Riegler 113208

Flat seal, (NBR with aramid fibres), for connection size (inch) 3, Operating temperature -20 °C to 200 °C Maximum temperature and maximum operating pressure should not occur at the same time!

Standards and origin

• Customs tariff number: 68159900
• Country of origin: DE

About Flat seal

Flat seals sit between the flat faces of a screwed joint and seal where the thread itself does not. They are the wearing part of the connection and get replaced every time the joint is opened. The group covers connection sizes 1/4 to 3 inch and is rated for operating temperatures from -20 °C to 200 °C.

What matters when choosing

• For thread: connection sizes run from 1/4 to 3 inch. What counts is the size of the fitting the seal is placed in, not the outside diameter of the pipe.
• Material: NBR with aramid fibres throughout the group. The fibre reinforcement carries the surface pressure while the NBR conforms to the sealing face.
• Temperature range: -20 °C to 200 °C. The manufacturer states explicitly that maximum temperature and maximum operating pressure must not occur at the same time.
• Country of origin: all 10 items are made in Germany, which matters for repeat orders and for consistent seal thickness.

Typical applications

• Sealing screwed joints on malleable cast iron fittings in pipework
• Compressed air distribution with connections from 1/4 to 3 inch
• Hot water and heating lines within the stated temperature window
• Maintenance work whenever an opened joint is reassembled
• Stocking as a spare part for existing fitting installations

All 10 items are made of NBR with aramid fibres and come from German production. A full set across the common inch sizes can therefore be stocked from a single range.