Products | J.W. Winco Standard Parts

GN 256 Silicone Vibration / Shock Absorption Mounts Conical Type, with Stainless Steel Components, Tapped Hole


Product Family Stainless Steel

Standard parts made of rustproof stainless steel have been designed for use in the food sector, in the chemical industry, for aggressive ambient conditions or for outdoor use.

  • corrosion-resistant
  • precise fit
  • environmentally friendly
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Product description


GN 256 silicone vibration / shock absorption mounts, also known as shock absorbing mounts, vibration mounts, anti-vibration mounts, vibration bobbins or rubber bumpers, are frequently used as end-stop bumpers, e.g. for conveyors.

The silicone rubber used is age-resistant and has an increased working temperature range. Due to the material purity, use is possible in the food and medical industry.

They absorb most of the accumulated kinetic energy on impact. They act as dampers and prevent damaging shock and rebound. They also act as sound dampers.

These mounts are also used as set-up elements and leveling feet.


Mount body
Silicone natural rubber Elastosil® (MVQ)
  • FDA compliant
  • GrayGRGR
  • Vulcanized to the cover plate
  • Temperature resistant up to 392 °F (200 °C)
  • Shore hardness A ±5

Cover plate, tapped insert
Stainless steel
European Standard No. 1.4301 (AISI 304)

RoHS compliant

On request

Versions with shore hardness A ±5
  • Soft*40
  • Hard*70
    * Not available from stock, requires a minimum order quantity

Other colors

Technical drawing

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GN 256 Silicone Vibration / Shock Absorption Mounts, Conical Type, with Stainless Steel Components, Tapped Hole sketch

Part Options / Table

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Dimensions in: Inch (change to Metric)
stSpring rate ≈
Hardness 55
Max. load
Hardness 55
Max. deflection ≈
0.7510 x 240.470.630.080.20360 lbf/in (63 N/mm)56.20 lbf (250 N)0.16
0.981/4 x 200.650.810.080.24514 lbf/in (90 N/mm)103 lbf (460 N)0.20
1.265/16 x 180.831.020.080.31668 lbf/in (117 N/mm)171 lbf (760 N)0.26
1.505/16 x 180.961.260.080.31645 lbf/in (113 N/mm)202 lbf (900 N)0.31
1.973/8 x 161.261.690.080.39845 lbf/in (148 N/mm)355 lbf (1580 N)0.42
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Dimensions in: Inch | Metric
stSpring rate ≈
Hardness 55
Max. load
Hardness 55
Max. deflection ≈
0.75M 50.470.630.080.20360 lbf/in (63 N/mm)56.20 lbf (250 N)0.16
0.98M 60.650.810.080.24514 lbf/in (90 N/mm)103 lbf (460 N)0.20
1.26M 80.831.020.080.31668 lbf/in (117 N/mm)171 lbf (760 N)0.26
1.50M 80.961.260.080.31645 lbf/in (113 N/mm)202 lbf (900 N)0.31
1.97M 101.261.690.080.39845 lbf/in (148 N/mm)355 lbf (1580 N)0.42

Build & Price

Outside diameter d1
Thread d2





Selected Part

Total US Dollars (net)
In stock: 140
In stock
Please note our quantity discounts (US Dollars).
≥ 250$5.95
Weight: -
If weight is not listed, please contact our Sales Department for additional information regarding weight.
Phone: 800-877-8351
RoHS compliant: -
This part is new in our product range, no details are available at this time. For more recent details on the RoHS compatibility, please contact our Sales Department!
Phone: 800-877-8351
All Prices are in US Dollars. Taxes Not Included.

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