Products

RUBBER-STEEL-FLANGE-GASKETS

Proven in pipeline construction

Rubber-steel-flange-gaskets and adjustable wedge rings have proven their worth for decades in all areas of plant and pipeline construction. Well-known companies in the primary industry, the chemical industry and last but not least countless utility companies at home and abroad appreciate the advantages of KROLL & ZILLER sealing elements.

Over 80 years of experience in solving individual sealing problems means that our customers have a range of flange gaskets with immense operational reliability. They benefit from these advantages when using KROLL & ZILLER gaskets:

  • A high degree of cost-effectiveness through a reduction in operating costs
  • An environmentally compatible material flow by avoiding leakages

Growing international competition is forcing cost minimization in all operational areas. Production disruptions, the occurrence of rejects, maintenance and servicing costs must be avoided by selecting optimum components.

The dangers of possible environmental pollution must be to be excluded. KROLL & ZILLER continuously pursues a policy of specialization, research and technical development in close cooperation with an international clientele.

The large available range of gaskets offers the possibility of high quality standardization. A high level of economy (reduced stock) is coupled with excellent handling. The latter is characterized by the stabilizing steel core, which considerably simplifies assembly, especially for large nominal diameters. simplified.

Our Gaskets / Your Advantages

  • Tightness at low surface pressure and at low tightening torques
  • Very good adaptability to the sealing surfaces
  • Low leakage rates thanks to homogeneous structure of elastomer material
  • Blow-out resistance and maximum stability due to centrally positioned, corrosion-protected and vulcanized steel insert
  • Optimum handling when installing the gasket

Quality… Made in Germany

Our products are 100% Made in Germany, making our supply chains stable and reliable at all times. With more than 80 years of experience in solving individual requirements, KROLL & ZILLER is your international and reliable partner for gaskets with highest operational safety.

Research and development in Germany

Our technological aspirations are preceded by research and development at our site in Germany in order to continue to drive innovation in the future. With our certification according to DIN EN ISO 9001:2015 we ensure that the principles of quality management are successfully implemented and that our development processes are continuously improved.

Optimal delivery capacity

A large and well-stocked warehouse is the guarantor for a rapid ability to deliver. The logistics department with its own carpenter‘s workshop packs and ships our gaskets all over North America.

G-ST-FLANGE-GASKETS

PROVEN IN PIPELINE AND PLANT CONSTRUCTION

Rubber-steel-flange-gaskets from KROLL & ZILLER are used for the safe sealing of flange connections in all fields. The use of rubber-steel gaskets is particularly recommended in areas of application where a secure gasket is required with low surface pressure:

Reliable sealing

Reliable sealing of flanged joints on pipelines has become possible thanks to the development of KROLL & ZILLER G-ST gaskets. During the process of vulcanization, extreme adhesion is achieved between the steel insert and the rubber coating. Even under the highest stresses, this makes displacement, detachment or even blow-out virtually impossible.

No flow losses

The standard-compliant dimensioning prevents unnecessary flow losses in the case of crosssectional overlap. This is combined with optimum handling during installation, as the gasket is centered on the bolt ring and has high dimensional stability due to the steel insert.

Materials

NR = Natural rubber
Temp.tmax. –30 …+60° C, Shore-A-Hardness 65 ±5

NBR-DUO-EL = Acrylonitrile-Butadiene Rubber.
Temp. tmax.–25…+70°C, Shore-A-Hardness 80 ±5

DRINKING WATER according to DIN-EN 681-1 + GAS according to DIN-EN 682Certificates / Approval according to valid standards and regulations

HNBR = Hydro-generated-Acrylonitrile-Butadiene Rubber
Temp.tmax. –25 …+150° C, Shore-A-Hardness 75 ±5 CR = Chloroprene Rubber Temp.tmax. –25 …+95° C, Shore-A-Hardness 60 ±5

CSM = Chloro-sulfonyl-polyethylene rubber
Temp. tmax.–20…+120°C, Shore-A-Hardness 80 ±5

EPDM(S) = Ethylene Propylene Diene Monomer Rubber Crosslinking Agent Sulfur
Temp.tmax.-30…+120°C; Shore-A-Hardness 75 ±5

EPDM-PW(P) = Ethylene-Propylene-Dien-Monomer-Rubber
Temp.tmax.-30…+120°C; Shore-A-Hardness 70 ±5

EPDM-EL = Ethylene Propylene Diene Monomer Rubber Crosslinking Agent Sulfurl
Temp.tmax.-30…+120°C; Shore-A-Hardness 75 ±5

With certification for drinking water according to DIN-EN-681-1, as well as further requirements in the automotive industry up to power plant and air conditioning technology

FKM = Fluorinated Rubber
Temp.tmax.-20…+ 200°C; Shore-A-Hardness 80 ±5

BIIR = Bromo-Isobutene Isoprene Rubber (Bromobutyl-Rubber)
Temp.tmax.-25…+120°C; Shore-A-Hardness 70 ±5

STEEL INSERT = 1.0330, other materials on request

Products

Download the Kroll & Ziller Product Catalog here.