Tumedei and Gulf Rubber produce a wide range of rubber products with composite moulding by bonding rubber polymers with one or more sub materials such as plastics, metals, brass, ceramics, PTFE and various fabrics.

Some products can have up to 4 different materials in one finished part, for example some metering pump diaphragms are produced with a metal insert (thread fitting) bonded with the rubber polymer (NBR or EPDM), a fabric material (reinforcing) and a PTFE coating (to increase abrasion and chemical resistance).

Tumedei and the Gulf Rubber group combine several laboratory technicians and chemists with great experience from both the rubber and the plastic industries, giving us material and polymer expertise to develop new solutions using the latest technologies and manufacturing techniques.

Our composite moulding technology combined with our ability to mould single plastic components, Tumedei can offer sub assembly solutions (at low cost assembly locations) with reduction of components, resulting in lower inventory and reduced assembly time and costs.

Most of these solutions and/or products are produced with the following features:

  • Rubber polymers ranging from NR, SBR, NBR, EPDM, CR, VMQ Silicone and others.
  • Rubber Materials from 40 to 80 IRHD available, however usual applications call for 50 to 70 IRHD.
  • Materials with international drinking water approvals, please refer to our material section.
  • Range of plastic materials: Refer to our material section.
  • Hardness can be maintained under certain production conditions within +/-3 IRHD, however normal hardness tolerance is usually +/-5 IRHD.
  • Dimensional tolerances can be maintained under certain production conditions below class M1 (ISO3302), some specific applications for which we maintain critical tolerance of +/-0.05mm.
  • 100% vacuum tested products, pressure and/or vacuum test, sealing/leak test, endurance tests, other physical and mechanical testing available.

Typical Products:

  • Thin Diaphragms
    • Metering pump diaphragms
    • Silicone diaphragms
  • Filter products (rubber, fabric and plastic)
  • Plug insert for water plug valve (metal shaft, plastic and EPDM rubber)
  • Rocking lever for pneumatic valves (EPDM with plastic)
  • Plunger for pneumatic / water / CNG LPG valves (metal or brass with FKM or NBR)

Application fields:

  • Household domestic appliance
  • Automotive industry
  • Pneumatic valve
  • Water management
  • Gas – Domestic and Industrial