Project Description

Bonded Seal (Dowty Seal)

Bonded Seal (also known as Dowty Seal or Dowty Bonded Washer) represents a combination of metal washer and elastomer sealing lip vulcanised to the edge of the metal part to seal bolted connections and mounting elements in all industrial applications e.g. pipe connections and couplings. When the bolted connection is tightened, the sealing lip is pressed against the flat surfaces.

We produce all standard self-centering bonded seals, KDS bonded seals and can also supply Bonded Seal Kits in BSP and metric sizes or custom kits to suit customer requirements.

Self centering bonded washer

APPLICATIONS

Bonded seal is applicable to all threaded bolts, studs and clearance holes. With large range of elastomers and metals available, it can works in wide temperature range.

It can be automatically installed. Metal washer with vulcanised sealing body of rubber for sealing of bolt heads and flanges.

BENEFITS

Cost effective solution for bolt/thread sealing

Sealing washers are available for metric and BSP threads

Large range of elastomers and metals available

Concentrically located

Ease of assembly

Typical applications for bonded seal include:

  • Mobile Hydraulics

  • Hydraulic Cylinder Rebuild

  • Agricultural Hydraulics

  • Construction Equipment

  • Hydraulic Presses

  • Injection Molding Machines

Materials for bonded seal include:

  • Middle carbon steel zinc plated

  • Nitrile(NBR)

  • Stainless steel(SS304, SS316, etc.)

  • Viton(FKM, FPM)

  • Brass

  • EPDM

We stocked below Metric and BSP bonded seals, all in self centering NBR lip with steel washer.

Metric series, self centering
Auter
Ref.
Metric Thread SizeInside DiameterOutside DiameterMetal
Thickness
Metal Washer IDID between self centering
CAEBF
605PPM55.709.001.006.804.90
606PPM66.7010.001.008.005.60
612PPM88.7013.001.0010.406.40
617PPM1010.7016.001.5012.408.05
622PPM1212.7018.001.5014.109.73
627PPM1414.7020.002.0016.4011.38
629PPM1616.7022.002.0018.4013.41
632PPM1818.7025.002.0020.4014.76
633PPM2020.7028.002.0022.5016.76
636PPM2222.7030.002.0024.4018.74
638PPM2424.7032.002.0026.4020.11
640PPM2727.7035.002.0029.4023.30
642PPM3030.7038.002.0032.4025.70
643PPM3333.7042.002.0035.4028.70
645PPM3636.7046.002.0038.7031.10
646PPM3941.7051.002.0040.0034.10
647PPM4242.7053.002.0045.7038.70
649PPM4848.7060.002.0051.7043.70
650PPM5252.7066.002.0056.4048.20
651PPM6060.7075.002.0063.0056.20
BSP series, self centering
Auter
Ref.
BSP Thread SizeInside DiameterOutside DiameterMetal
Thickness
Metal Washer IDID between self centering
CAEBF
8201/8 BSP10,3715,882,0011,848,26
8211/4 BSP13,7420,572,0015,2111,18
8233/8 BSP17,2823,802,0018,7514,76
8251/2 BSP21,5428,582,0023,0118,24
8265/8 BSP23,4931,752,0034,9720,60
8273/4 BSP27,0534,932,0028,5323,83
8297/8 BSP30,8138,102,0032,2927,89
8301 BSP33,8942,803,2036,8829,92
8321 1/4 BSP42,9352,383,2045,9338,45
8331 1/2 BSP48,4458,603,2051,3944,45
8362 BSP60,5873,033,2063,6356,26

KDS Bonded Seal

Type KDS bonded seal is know as bonded seal for banjo fittings from parker,  we developed all KDS series from M10/G1/8A to M48/G1 1/2A. Please find the details in the below table.

bonded seal for banjo fittings
ProfileThread sizeInside
Diameter
ID Between
Centering
Metal
Washer ID
Outside DiameterMetal
Thickness
Total
Thickness
KDS-LM10-G1/810.308.3013.1016.002.503.30
KDS-LM1212.3010.3015.1018.003.004.00
KDS-LM14-G1/414.3012.3017.1020.003.004.00
KDS-LM16-G3/817.0015.0019.8024.003.004.00
KDS-IM1818.3016.3021.1023.903.004.00
KDS-LM22-G1/222.3020.3025.1030.004.505.50
KDS-LM2626.3024.0029.4035.003.504.50
KDS-LM27-G3/427.3025.0030.4038.003.504.50
KDS-LM33-G133.6031.4037.3042.003.504.80
KDS-IM42-G1.1/442.4040.4046.7049.903.504.80
KDS-LM48-G1.1/248.4046.4052.7060.003.504.80
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