Spacer Ring

A Spacer Ring allows the passage of fluid (or gas) in the system line through the different flanges. A spacer ring consists of a metal ring, which can be made of different materials, and a welded handle. 


At the Settimo Milanese site, we produce spacer rings of the Raised Face (RF), Flat Face (FF) or Ring Joint (RTJ) varieties and mainly defined by the ASME standard. Each spacer ring is sandwiched between two flanges with a gasket on each side. 


Contact our team on via Luigi Galvani 21/A for more information or a quote and organise your supply. We will meet your every need, guaranteeing utmost professionalism.

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Variety of materials

Each Spacer Ring produced by our company meets the highest dimensional standards and is capable of satisfying the different needs of companies operating in the chemical, petrochemical, naval and water purification sectors.



In particular, Da.Ma.An. produces Spacer Rings from 1/2" up to 60" in different types of materials:

  • Technical datasheet

    • carbon steel (ASTM 105, A516 Gr. 60/65/70, A350 LF2, A694 F60-65);
    • stainless steel (AISI 304, 316, 321, 347);
    • alloy steel (AISI Gr.1, Gr.5, Gr.9, Gr.91, Gr.11, Gr.22);
    • nickel alloys;
    • duplex/super duplex (F51, F53, F55) F44;
    • incoloy (800, 800H, 800 HT, 825); 
    • alloy 20;
    • hastelloy (C22, C276);
    • cupronickel Cu-Ni;
    • monel 400;
    • inconel (600, 625);
    • titanium (Gr. 1, 2, 3).

We also produce RTJ, RF and FF spacer rings (class 150/300/600/900/1500/2500) according to major dimensional standards such as B16.47 A-B, B16.48, Aramco, Shell, Petrobras, Foster Wheeler, Api 590 and Api 5000/10000.

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