R3 ASSEMBLY SEAL

An inexpensive replacement for compression packings in pumps that can convert to mechanical seals.

Robust Assembly Seals for Pumps

Our innovative R3 Assembly Seal is the ideal solution for all the constant pump leaks in your industrial unit. The shafts of any pump are a sensitive area where liquid constantly exerts force and damages the rotating parts. A good assembly seal for pumps strengthens rotating shafts, ensuring that no leaks occur and water is effectively channeled to the right location.

At Robco, we provide all kinds of seal solutions that last, and the R3 seal is no different. The singular large spring ensures that minor misalignments don’t bring down the whole network; the distributed torque mechanism ensures adequate force to withstand high pressure, and the carbon holder is crimped for retention sans adhesives. All of these minute details come together to create an excellent assembly seal.

We offer only high-quality assembly seals for pumps because we recognize how important it is for your machinery to function flawlessly.

Features and Benefits

  • Large single spring compensates for minor shaft misalgnment.
  • Hex drive design distributes torque during start-up creating a positive seal that withstands revers pressure at shut-down and changes of pressure.
  • Crimped carbon holder retains carbon faces during installation without adhesives.

Technical Data and Dimensions

All standard dimensions will be customized to fit your application.
INCHES
SHAFT SIZE DIAMETER
± .002
SIZE CODESEAL OD
B
SINGLE SHORT
± .125
SINGLE LONG
± .125
DOUBLE SHORT
± .125
DOUBLE LONG
± .125
.500008.917.8121.1871.1401.520
.6250101.185.8751.3121.1701.600
.7500121.302.8751.3121.2201.650
.8750141.429.9371.3751.2801.720
1.0000161.5521.0001.5621.3401.900
1.1250181.6001.0621.6251.4702.031
1.2500201.8751.0621.6251.4702.031
1.3750221.9201.1251.6871.5302.100
1.5000242.1251.1251.6871.5302.100
1.6250262.3751.3752.0001.7802.410
1.8750302.5151.5002.1251.9102.530
2.1250342.9381.6872.3752.1002.780
2.2500362.9381.6872.3752.1002.780
2.3750383.3001.8122.5002.2402.920
2.5000403.5001.8122.5002.3002.980
2.6250423.5001.9372.7502.3003.250
2.7500443.5001.9372.7502.4303.250
2.8750463.8002.0622.8752.4803.380
3.0000483.8002.0622.8752.4803.380

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

Operating Specifications

Temperature limit:
-40C F to ﹢400 F ( -40 C to +205 C)
based on standard elastomers
Pressure limit to: 200 psi

Standard Material Construction

Metal Components: 302/304 SS

Face: Chemical Grade Carbon, Tungsten Carbide, Silicon Carbide

Elastomer: Nitrile or Vitron, also available upon request – EPR and neoprene

Seat: Ceramic, Silicon Carbide