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.
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 Size | Inside Diameter | Outside Diameter | Metal Thickness |
Metal Washer ID | ID between self centering |
C | A | E | B | F | ||
605 | PPM5 | 5.70 | 9.00 | 1.00 | 6.80 | 4.90 |
606 | PPM6 | 6.70 | 10.00 | 1.00 | 8.00 | 5.60 |
612 | PPM8 | 8.70 | 13.00 | 1.00 | 10.40 | 6.40 |
617 | PPM10 | 10.70 | 16.00 | 1.50 | 12.40 | 8.05 |
622 | PPM12 | 12.70 | 18.00 | 1.50 | 14.10 | 9.73 |
627 | PPM14 | 14.70 | 20.00 | 1.50 | 16.40 | 11.38 |
629 | PPM16 | 16.70 | 22.00 | 1.50 | 18.40 | 13.41 |
632 | PPM18 | 18.70 | 25.00 | 1.50 | 20.40 | 14.76 |
633 | PPM20 | 20.70 | 28.00 | 1.50 | 22.50 | 16.76 |
636 | PPM22 | 22.70 | 30.00 | 2.00 | 24.40 | 18.74 |
638 | PPM24 | 24.70 | 32.00 | 2.00 | 26.40 | 20.11 |
640 | PPM27 | 27.70 | 35.00 | 2.00 | 29.40 | 23.30 |
642 | PPM30 | 30.70 | 38.00 | 2.00 | 32.40 | 25.70 |
643 | PPM33 | 33.70 | 42.00 | 2.00 | 35.40 | 28.70 |
645 | PPM36 | 36.70 | 46.00 | 2.00 | 38.70 | 31.10 |
646 | PPM39 | 41.70 | 51.00 | 2.00 | 40.00 | 34.10 |
647 | PPM42 | 42.70 | 53.00 | 2.00 | 45.70 | 38.70 |
649 | PPM48 | 48.70 | 60.00 | 2.00 | 51.70 | 43.70 |
650 | PPM52 | 52.70 | 66.00 | 2.00 | 56.40 | 48.20 |
651 | PPM60 | 60.70 | 75.00 | 2.00 | 63.00 | 56.20 |
BSP series, self centering | ||||||
Auter Ref. |
BSP Thread Size | Inside Diameter | Outside Diameter | Metal Thickness |
Metal Washer ID | ID between self centering |
C | A | E | B | F | ||
820 | 1/8 BSP | 10,37 | 15,88 | 2,00 | 11,84 | 8,26 |
821 | 1/4 BSP | 13,74 | 20,57 | 2,00 | 15,21 | 11,18 |
823 | 3/8 BSP | 17,28 | 23,80 | 2,00 | 18,75 | 14,76 |
825 | 1/2 BSP | 21,54 | 28,58 | 2,00 | 23,01 | 18,24 |
826 | 5/8 BSP | 23,49 | 31,75 | 2,00 | 34,97 | 20,60 |
827 | 3/4 BSP | 27,05 | 34,93 | 2,00 | 28,53 | 23,83 |
829 | 7/8 BSP | 30,81 | 38,10 | 2,00 | 32,29 | 27,89 |
830 | 1 BSP | 33,89 | 42,80 | 3,20 | 36,88 | 29,92 |
832 | 1 1/4 BSP | 42,93 | 52,38 | 3,20 | 45,93 | 38,45 |
833 | 1 1/2 BSP | 48,44 | 58,60 | 3,20 | 51,39 | 44,45 |
836 | 2 BSP | 60,58 | 73,03 | 3,20 | 63,63 | 56,26 |