R1 Assembly Seal

R1 Assembly Seal
Pressure balanced metal bellows with a graphite seal to the shaft.

Features and Benefits

  • Bellows rotate with the shaft using centrifugal force to throw dirt and particles away from the bellows convolutions.
  • Designed to handle extreme temperatures.
  • No shaft freting due to static secondary seal design.
  • Effective 360 contact is maintained on sealing faces despite minor shaft movement and runout.
  • Vibration dampening design helps control excessive vibration.

Technical Data and Dimensions

R1
All standard dimensions will be customized to fit your application.

Inches
Shaft Size Decimal shaft size Code a b
.750 012 1.375 1.625
.875 014 1.500 1.625
1.000 016 1.625 1.625
1.125 018 1.750 1.625
1.250 020 1.875 1.625
1.375 022 2.000 1.812
1.500 024 2.125 1.812
1.625 026 2.250 1.812
1.750 028 2.375 1.812
1.875 030 .2.500 1.812
2.000 032 2.625 1.812
2.125 034 2.750 1.812
2.250 036 2.875 1.812
2.275 038 3.000 1.812
2.500 040 3.250 1.937
2.625 042 3.375 1.937
2.750 042 3.375 1.937
2.750 044 3.500 1.937
2.875 046 3.625 1.937
3.000 048 3.750 1.937
3.125 050 3.875 1.937
3.250 052 4.000 1.937
3.375 054 1.125 1.937
3.500 056 4.250 1.937
3.625 058 4.375 1.937
3.875 062 4.625 1.937
4.000 064 4.750 1.937
4.125 066 4.875 1.937

SIZES: Metric and sixteenth seals available against specific orders. Larger shaft diameters available against speficic orders.



Operating Specifications

Temperature limit:
-350C F to 800 F ( -212 C to 454 C)
Pressure limit to: 20.4 kPa/300 psi
(elevated pressure outside bellows)
6.8 kPa/100 psi
(elevated pressure inside bellows)
Shaft speeds to: 5000 rpm


Standard Material Construction

Metal Components: Bellows ~ AM 350, End Fittings 316 SS
Retainer ~ Carpenter 42/Invar #36
Hubs ~ 316L ss
Screws ~ 316 ss

Secondary Seal
Grafoil*

Face
Thermo Carbon or Tungsten Carbide
(other materials available upon request)
*Trademark of Union Carbide Corporation


Total Warranty

All Robco seals are manufactured to exact standards, and are guaranteed free of defects in materials and workmanship. All seals are guaranteed for 90 days from delivery, excepting negligence, misuse and abuse, and will deliver at our expense a new seal to replace any seal found to be defective within said period. No registration card is required.

The warranty is expressly in lieu al all warranties, expressed or implied, and of all obligation or liabilities on our part, including any liability for incidental or consequential damages.

Disclaimer

The temperature limits, pH ranges, pressure ratings, feet per box and shaft speeds shown throughout this pamphlet are representative; the service life and performance of these products can be affected by elevated temperatures and other operating conditions such as chemical resistance, shaft speeds, pressure and equipment in which that the product is being installed. The ratings supplied are suggested as a guideline and should only be used for evaluating your specific application. When in doubt, contact Robco or your ENVIROPAK distributor. The information contained in the pamphlet should not be considered to be a warranty, expressed or implied, including, but not limited to, a warranty of merchantability or fitness for a particular purpose. In no event shall Robco be liable for any incidental or consequential damages resulting from the use, misuse or inability to use the products. This exclusion applies regardless of whether such damages are sought based on breach of warranty, breach of contract, negligence, strict liability in tort, or any other legal theory.

All Robco mechanical seals are manufactured, assembled and tested in America.