Cushioning seal Prädifa series V6 | Product Series

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Inside Diameter (mm)

Outside Diameter (mm)

Element Height (mm)

Groove Width

Minimum Working Temperature (C)

Maximum Working Temperature (C)

Seal Material

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Cushioning seal Prädifa series V6 Cushioning seal Prädifa series V6

Cushioning seal Prädifa series V6

Where to Buy

Cushioning seal for pneumatic cylinders with incorporated venting channels. Short axial length.

Technical Specifications

  • Media: Pneumatic
  • Polymer Material Options: Nitrile Butadiene Rubber (NBR, XNBR), Fluorocarbon Rubber (FKM, FPM), Ethylene Propylene Rubber (EPM, EPR, EPDM), Hydrogenated Nitrile Butadiene Rubber (HNBR, HSN)
  • Maximum Operating Pressure: 16 bar
  • Minimum Operating Temperature: -50 to -10 °C
  • Maximum Operating Temperature: 80 to 200 °C
  • Maximum Surface Speed: 1 m/sec, 2 m/sec
  • Unit of Measure: Length: mm
  • Cushioning Mechanism: Yes
  • Thermal Application Type: Standard Moderate Temperature (-35 to 100°C), Expanded Low and High Temperature (< 205°C), Low Temperature (< -35 C), High Temperature (< 205°C)
  • Pressure Rating: Pneumatic Pressure (< 16 bar)
Safety Warning

Full Product Description

The V6 cushioning ring is used for sealing cushioning pistons in pneumatic cyclinders in the end position. The compact seal provides sealing toward the cushioning piston and concurrently acts as a valve during the return stroke. Due to the combination of geometry and material, small grooves are possible.

• No mechanical check valves required since their function is performed by the cushioning rings.
• Optimum use of design-related cushion travel.
• Good wear resistance.
• Easier installation.
• High temperature resistance in case of suitable compound selection.
• Excellent media resistance in case of suitable compound selection.
• Immediate response to reversed direction thanks to incorporated venting channels.
• Short axial assembly length.
• Short radial assembly depth.
• Installation in closed and undercut housings.

Range of application:
For pneumatic cylinders with end-position cushioning.

Related Documents

Literature and Reference Materials
Pneumatic Seals--PTD3351
Compound Data Sheet NBR N3578
Cushioning seal V6--PTD3351
Product Demos & Tutorials
How to Properly Store and Clean Elastomer Seals
Mixing the right ingredients: Material Development at Parker-Prädifa
Parker Final Exam in Physics / Sealing Systems Put to the Test
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Products Inside Diameter (mm) Outside Diameter (mm) Element Height (mm) Groove Width Minimum Working Temperature (C) Maximum Working Temperature (C) Seal Material
V6A007N3578 100 114 7 8.400 -30 80 N3578
V6A007V3681 100 114 7 8.400 -10 200 V3681
V6B007N3578 110 124 7 8.400 -30 80 N3578
V61004N3578 10 18 4 4.8 -30 80 N3578
V61204N3578 12 20 4 4.8 -30 80 N3578
V61404N3578 14 22 4 4.8 -30 80 N3578
V61604N3578 16 24 4 4.8 -30 80 N3578
V61604N8613 16 24 4 4.8 -45 80 N8613
V61604V3681 16 24 4 4.8 -10 200 V3681
V61804N3578 18 26 4 4.8 -30 80 N3578
V62004N3578 20 28 4 4.8 -30 80 N3578
V62004V3681 20 28 4 4.8 -10 200 V3681
V62204N3578 22 30 4 4.8 -30 80 N3578
V62204V3681 22 30 4 4.8 -10 200 V3681
V62404N3578 24 32 4 4.8 -30 80 N3578
V62504N3578 25 33 4 4.8 -30 80 N3578
V62504V3681 25 33 4 4.8 -10 200 V3681
V62504V3839 25 33 4 4.8 -10 200 V3839
V62605N3578 26 36 5 6 -30 80 N3578
V62805N3578 28 38 5 6 -30 80 N3578
V63005N3578 30 40 5 6 -30 80 N3578
V63005V3681 30 40 5 6 -10 200 V3681
V63205E3676 32 42 5 6 -50 150 E3676
V63205N3578 32 42 5 6 -30 80 N3578
V63405N3578 34 44 5 6 -30 80 N3578
V63505N3578 35 45 5 6 -30 80 N3578
V63605N3578 36 46 5 6 -30 80 N3578
V63805N3578 38 48 5 6 -30 80 N3578
V64005E3676 40 50 5 6 -50 150 E3676
V64005N3578 40 50 5 6 -30 80 N3578
V64005V3681 40 50 5 6 -10 200 V3681
V64505N3578 45 55 5 6 -30 80 N3578
V64505V3681 45 55 5 6 -10 200 V3681
V65005N3578 50 60 5 6 -30 80 N3578
V65005N3587 50 60 5 6 -30 80 N3587
V65005V3681 50 60 5 6 -10 200 V3681
V65507N3578 55 69 7 8.400 -30 80 N3578
V65507V3839 55 69 7 8.400 -10 200 V3839
V66007N3578 60 74 7 8.400 -30 80 N3578
V66007V3839 60 74 7 8.400 -10 200 V3839
V66507N3544 65 79 7 8.400 -30 80 N3544
V66507N3578 65 79 7 8.400 -30 80 N3578
V66507N8613 65 79 7 8.400 -45 80 N8613
V66507V3664 65 79 7 8.400 -10 200 V3664
V67007N3578 70 84 7 8.400 -30 80 N3578
V68007N3512 80 94 7 8.400 -30 80 N3512
V68007N3578 80 94 7 8.400 -30 80 N3578
V68007N8613 80 94 7 8.400 -45 80 N8613
V68007V3681 80 94 7 8.400 -10 200 V3681
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