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Elastomer Mechanical seals E21R

Elastomer Mechanical seals E21R


Mechanical seal elastomer E21R produced by Raymon Surin Company with the necessary approvals and is produced with the best quality

SKU 2020-2760 Categories ,


Elastomer Mechanical seals E21R

الاستومر مکانیکال سیل مدل E21R
الاستومر مکانیکال سیل مدل E21R
DIN 24250
1.1472Seal face
1.3484.2L-ring (spring collar)
1.4484.1L-ring (spring collar)
3412O-Ring or cup rubber


  • For plain shafts
  • Single and dual seal
  • Elastomer bellows rotating
  • Unbalanced
  • Independent of direction of rotation
  • No torsion on bellows


  • Shaft protection over entire seal length
  • Protection of seal face during installation due to special bellows design
  • Insensitive to shaft deflections due to large axial movement ability
  • Universal application opportunities
  • Important material certifications available
  • High flexibility due to wide offer on materials
  • Suitable for low-end sterile applications
  • Dimension adaptions and additional seats available

Operating range

Shaft diameter: d1 = 10 … 100 mm (0.39″ … 3.94″)
Pressure: p1 = 16 bar (230 PSI), vacuum … 0.5 bar (7.25 PSI), up to 1 bar (14.5 PSI) with seat locking
Temperature: t = -20 °C … +140 °C (-4 °F … +284 °F)
Sliding velocity: vg = 10 m/s (33 ft/s)
Admissible axial movement: ±2.0 mm (±0,08″)


Seal face: Carbon graphite antimony impregnated (A), Carbon graphite resin impregnated (B), Silicon carbide (Q1, eSiC-Q7)
Seat: Silicon carbide (Q1, eSic-Q7), Tungsten carbide (U3)
Elastomer: NBR (P), EPDM (E), FKM (V),
Metal parts: CrNiMo steel (G), Hastelloy® (M)Further materials upon request.

Standards and approvals

  • FDA
  • WRAS
  • KTW
  • ACS
  • W270
  • NSF

Recommended applications

  • Fresh water supply
  • Building services engineering
  • Waste water technology
  • Food technology
  • Sugar production
  • Pulp and paper industry
  • Oil industry
  • Petrochemical industry
  • Chemical industry
  • Water, waste water, slurries
    (solids up to 5 % by weight)
  • Pulp (up to 4 % otro)
  • Latex
  • Dairies, beverages
  • Sulfide slurries
  • Chemicals
  • Oils
  • Chemical standard pumps
  • Helical screw pumps
  • Stock pumps
  • Circulating pumps
  • Submersible pumps
  • Water and waste water pumps
  • Oil applications



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