Watertight Enclosure End Caps, Domes, and Flange Caps

retired
retired

$14.00 – $100.00

End caps and flange caps for the 2″, 3″, 4″, 5″, 6″, and 8″ Series Watertight Enclosures. These are the second generation of these end caps and flange caps with precision machined O-ring interfaces, a locking cord, anti-rotation feature, and optional M10 holes for cable penetrators. Rated to depths up to 1000 meters.

If you’re looking for a complete underwater enclosure, check out the Watertight Enclosure Configuration page.

SKU: WTE-END-CAP-VP
HS Code:

Product Description

A variety of end cap and flange cap options for the 2″, 3″, 4″, 5″, 6″, and 8″ Series Watertight Enclosures allow you to customize your enclosure for your application. End caps require an O-ring sealing flange to be installed on the enclosure and flange caps have the O-ring sealing flange built-in so that one is not necessary.

The clear acrylic end cap and dome end cap offer optically clear ports for cameras, lights, and other applications where optical clarity is important. They install to the O-ring sealing flange with six included screws.

The flange caps are anodized aluminum and include the same features as the O-ring sealing flange including dual radial O-rings for reliable high-pressure sealing, a locking cord gland, and an anti-rotation feature. The flange caps are available with a solid blank end, which can be machined with custom hole patterns, as well as M10 threaded holes for our cable penetrators. The flange caps do not require any screws, eliminating the need for stainless steel near the enclosures and preventing galvanic corrosion.

The end caps and flange caps are available individually here, but you can configure a complete watertight enclosure from the watertight enclosure configuration page.

Tube and flange with the locking cord installed.

Product Description

A variety of end cap and flange cap options for the 2″, 3″, 4″, 5″, 6″, and 8″ Series Watertight Enclosures allow you to customize your enclosure for your application. End caps require an O-ring sealing flange to be installed on the enclosure and flange caps have the O-ring sealing flange built-in so that one is not necessary.

The clear acrylic end cap and dome end cap offer optically clear ports for cameras, lights, and other applications where optical clarity is important. They install to the O-ring sealing flange with six included screws.

The flange caps are anodized aluminum and include the same features as the O-ring sealing flange including dual radial O-rings for reliable high-pressure sealing, a locking cord gland, and an anti-rotation feature. The flange caps are available with a solid blank end, which can be machined with custom hole patterns, as well as M10 threaded holes for our cable penetrators. The flange caps do not require any screws, eliminating the need for stainless steel near the enclosures and preventing galvanic corrosion.

The end caps and flange caps are available individually here, but you can configure a complete watertight enclosure from the watertight enclosure configuration page.

Tube and flange with the locking cord installed.
CAD models are of the 3″ Series end caps.

End Caps

  • 1 x End Cap (based on selection)
  • 6 or 10 x Socket Head Cap Screw (see technical details for size)

Domes

  • 1 x Dome and Retaining Ring (based on selection)
  • 6 or 10 x Socket Head Cap Screw (see technical details for size)

Flange Caps

  • 1 x Flange Cap (based on selection)
  • 2 x Radial O-ring
  • 1 x PTFE Locking Cord
  • 1 x Locking Cord Handle and Set Screw
  • 1 x Single-use Packet of Molykote 111 Compound

Specifications

End Caps

Series DiameterMaterialHole ConfigurationEnd Cap ScrewsEnd Cap Screw Hole Circle (K)Thickness ¹ (L)WeightDepth Rating ²Part Number
50 mm
(2")		Cast AcrylicBlank (No holes)M2x0.4-10Ø50.8 ± 0.1 mm6.4 mm17 g600 mBR-100094
Aluminum 6061-T6, type II anodizedBlank (No holes)Note: flange integral to end cap, does not
require separate flange.		63 g1000 mBR-100276-999
2x M10 Thru59 gBR-100276-002
4x M10x1.5 Threaded58 gBR-100276-004
75 mm
(3")		Cast AcrylicBlank (No holes)M3x0.5-12Ø82.6 ± 0.1 mm9 mm58 g400 mBR-100949-998
Aluminum 6061-T6, type II anodizedBlank (No holes)Ø82.6 ± 0.1 mm6 mm102 g1000 mBR-100949-999
4x M10 Thru6 mm97 gBR-100949-004
7x M10 Thru6 mm93 gBR-100949-007
100 mm
(4")		Cast AcrylicBlank (No holes)M3x0.5-16Ø108.0 ± 0.1 mm12.7 mm135 g500 mBR-102993-998
Aluminum 6061-T6, type II anodizedBlank (No holes)M3x0.5-1210 mm234 g1000 mBR-102993-999
5x M10 Thru10 mm223 gBR-102993-005
10x M10 Thru10 mm212 gBR-102993-002
7x M10 Thru
11x M10x1.5 Threaded		10 mm196 gBR-102993-003
1x M10 Thru
4x M14 Thru		10 mm215 gBR-102993-004
2x M10 Thru
8x M14 Thru		10 mm195 gBR-102993-006
5x M10 Thru
2x M10x1.5 Threaded
8x M14x1.5 Threaded		10 mm186 gBR-102993-007
130 mm
(5")		Aluminum 7075-T6, type II anodizedBlank (No holes)M3x0.5-12Ø133.0 ± 0.1 mm10 mm427 g1000 mBR-102203-001
5x M14 Thru
5x M10 Thru		393 gBR-102203-002
10x M14 Thru
7x M10 Thru 		367 gBR-102203-003
11x M10 Thru
15x M10x1.5 Threaded		369 gBR-102203-004
150 mm
(6")		Cast AcrylicBlank (No holes)M3x0.5-16158.7
± 0.1 mm		12.7 mm331 g150 mBR-102205-007
Aluminum 6061-T6, type
II anodized		Blank (No holes)M3x0.5-126 mm359 g150 mBR-102205-006
5x M10 Thru353 gBR-102205-005
15x M10 Thru339 gBR-102205-004
Aluminum 7075-T6, type II anodizedBlank (No holes)M3x0.5-12158.7 ± 0.1 mm12 mm687 g1000 mBR-102205-001
5x M10 Thru
5x M14 Thru		647 gBR-102205-002
16x M14 Thru
13x M10 Thru		566 gBR-102205-003
200 mm
(8")		Cast AcrylicBlank (No holes)M3x0.5-16209.1
± 0.1		12.7 mm564 g75 mBR-102206-007
Aluminum 6061-T6, type
II anodized		Blank (No holes)M3x0.5-126 mm599 g75 mBR-102206-006
5x M10 Thru592 gBR-102206-005
Aluminum 7075-T6, type II anodizedBlank (No holes)M3x0.5-12209.1 ± 0.116 mm1458 g1000 mBR-102206-001
5x M10 Thru
5x M14 Thru		1370 gBR-102206-002
10x M10 Thru
10x M14 Thru		1283 gBR-102206-003
16x M14 Thru
14x M10 Thru		1191 gBR-102206-004
¹ Overall thickness tolerance ± 0.1 mm.
² The depth ratings for cast acrylic components are applicable only for short-term submersions lasting less than two weeks. For longer submersion, we suggest using aluminum components only.

Domes

Series DiameterMaterialDome Internal Radius (M)Dome Wall Thickness (N)ScrewsWeightDepth Rating¹Part Number
50 mm (2")Acrylic dome, polycarbonate retaining ring18.0 ± 0.1 mm2.50 ± 0.10 mmM2x0.4-1015 g950 mBR-100859
75 mm (3")31.25 ± 0.10 mm3.1 ± 0.1 mmM3x0.5-1239 g750 mBR-101059
100 mm (4")43.5 ± 0.1 mm3.75 ± 0.10 mmM3x0.5-1281 g500 mBR-100495
130 mm (5")Hardened polycarbonate dome, polycarbonate retaining ring53.5 ± 0.057.00 ± 0.05M3x0.5-12195 g600 mBR-102597
¹ The depth ratings for cast acrylic components are applicable only for short-term submersions lasting less than two weeks. For longer submersion, we suggest using aluminum components only.

HS Codes

End CapHS Code
Acrylic End Caps3923.50.0000
Aluminum End Caps7606.92.3025
Domes3926.90.9985

3D Models

2" Series

WTE2-P-END-CAP-R2 (.zip)

WTE2-M-LOCKING-FLANGE-CAP-BLANK-R1 (.zip)

WTE2-M-LOCKING-FLANGE-CAP-2-HOLE-R1 (.zip)

WTE2-M-LOCKING-FLANGE-CAP-4-HOLE-R1 (.zip)

WTE2-P-DOME-R1 (.zip)

WTE2-P-RETAINING-RING-R1 (.zip)

3" Series

WTE3_END_CAP_ACRYLIC_BLANK_BR-100949-998 (.zip)

WTE3-M-END-CAP-R1 (.zip)

WTE3-M-END-CAP-4-HOLE-R1 (.zip)

WTE3-M-END-CAP-7-HOLE-R1 (.zip)

WTE3-P-DOME-R1 (.zip)

WTE3-P-RETAINING-RING-R1 (.zip)

4" Series

WTE4_END_CAP_10xM10_BR-102993-002 (.zip)

WTE4_END_CAP_18xM10_BR-102993-003 (.zip)

WTE4_END_CAP_4xM14_1xM10_BR-102993-004 (.zip)

WTE4_END_CAP_5xM10_BR-102993-005 (.zip)

WTE4_END_CAP_8xM14_2xM10_BR-102993-006 (.zip)

WTE4_END_CAP_8xM14_7xM10_BR-102993-007 (.zip)

WTE4_END_CAP_ACRYLIC_BLANK_BR-102993-998 (.zip)

WTE4_END_CAP_BLANK_BR-102993-999 (.zip)

WTE4-P-DOME-R4 (.zip)

WTE4-P-DOME-RETAINING-RING-R1 (.zip)

5" Series

WTE5_END_CAP_BLANK_BR-102203-001 (.zip)

WTE5_END_CAP_5xM14_5xM10_BR-102203-002 (.zip)

WTE5_END_CAP_10xM14_7xM10_BR-102203-003 (.zip)

WTE5_END_CAP_26xM10_BR-102203-004 (.zip)

WTE5_DOME_AND_RETAINING_RING_BR-102597 (.zip)

6" Series

WTE6_END_CAP_BLANK_BR-102205-001 (.zip)

WTE6_END_CAP_5xM14_5xM10_BR-102205-002 (.zip)

WTE6_END_CAP_16xM14_13xM10_BR-102205-003 (.zip)

WTE6_END_CAP_15xM10_BR-102205-004 (.zip)

WTE6_END_CAP_5xM10_BR-102205-005 (.zip)

WTE6_END_CAP_BLANK_BR-102205-006 (.zip)

WTE6_END_CAP_ACRYLIC_BLANK_BR-102205-007 (.zip)

WTE6_END_CAP_12xM14_12xM10_BR-100140 (.zip)

8" Series

WTE8_END_CAP_BLANK_BR-102206-001 (.zip)

WTE8_END_CAP_5xM10_5xM14_BR-102206-002 (.zip)

WTE8_END_CAP_10xM10_10xM14_BR-102206-003 (.zip)

WTE8_END_CAP_14xM10_16xM14_BR-102206-004 (.zip)

WTE8_END_CAP_5xM10_BR-102206-005 (.zip)

WTE8_END_CAP_BLANK_BR-102206-006 (.zip)

WTE8_END_CAP_ACRYLIC_BLANK_BR-102206-007 (.zip)

Revision History

28 October 2024

  • BR-100273-001, 150 mm (6") 15x M10 part number changed to BR-102205-004
  • BR-100273-002, 150 mm (6") 5x M10 part number changed to BR-102205-005
  • BR-100273-003, 150 mm (6") Blank part number changed to BR-102205-006
  • BR-100273-004, 150 mm (6") Acrylic Blank part number changed to BR-102205-007
  • BR-101065-001, 200 mm (8") 5xM10 part number changed to BR-102206-005
  • BR-101065-002, 200 mm (8") Blank part number changed to BR-102206-006
  • BR-101065-003, 200 mm (8") Acrylic Blank part number changed to BR-102206-007

24 October 2024

  • BR-100170, 100 mm (4") 10x M10 part number changed to BR-102993-002
  • BR-101113, 100 mm (4") 18x M10 part number changed to BR-102993-003
  • BR-100138, 100 mm (4") 4x M14 1x M10 part number changed to BR-102993-004
  • BR-100875, 100 mm (4") 5x M10 part number changed to BR-102993-005
  • BR-100066, 100 mm (4") 8x M14 2x M10 part number changed to BR-102993-006
  • BR-100151, 100 mm (4") 8x M14 7x M10 part number changed to BR-102993-007
  • BR-100061, 100 mm (4") Acrylic Blank part number changed to BR-102993-998
  • BR-100184, 100 mm (4") Blank part number changed to BR-102993-999
  • BR-100273-001, 150 mm (6") 15x M10 depth rating increased to 150 m
  • BR-100273-002, 150 mm (6") 5x M10 depth rating increased to 150 m
  • BR-100273-003, 150 mm (6") Blank depth rating increased to 150 m
  • BR-100273-004, 150 mm (6") Acrylic Blank depth rating increased to 150 m
  • BR-101065-001, 200 mm (8") 5x M10 depth rating increased to 75 m
  • BR-101065-002, 200 mm (8") Blank depth rating increased to 75 m
  • BR-101065-003, 200 mm (8")Acrylic Blank depth rating increased to 75 m

23 October 2024

  • BR-100630, 75 mm (3") Acrylic Blank part number changed to BR-100949-998

7 February 2024

  • BR-102203-001, 130 mm (5") Blank - Initial release
  • BR-102203-002, 130 mm (5") 5x M14 5x M10 - Initial release
  • BR-102203-003, 130 mm (5") 10x M14 7x M10 - Initial release
  • BR-102203-004, 130 mm (5") 26x M10 - Initial release
  • BR-102205-001, 150 mm (6") Blank - Initial release
  • BR-102205-002, 150 mm (6") 5x M14 5x M10 - Initial release
  • BR-102205-003, 150 mm (6") 16x M14 13x M10 - Initial release
  • BR-102206-001, 200 mm (8") Blank - Initial release
  • BR-102206-002, 200 mm (8") 5x M14 5x M10 - Initial release
  • BR-102206-003, 200 mm (8") 10x M14 10x M10 - Initial release
  • BR-102206-004, 200 mm (8") 16x M14 14x M10 - Initial release

14 July 2023

  • WTE4-M-END-CAP-4XM14-1XM10-R1-RP SKU changed to BR-100138
  • WTE4-M-END-CAP-8XM14-2XM10-R1-RP SKU changed to BR-100066
  • WTE4-M-END-CAP-8XM14-7XM10-R1-RP SKU changed to BR-100151

14 June 2023

  • WTE4-P-END-CAP-BLANK-R1 SKU changed to BR-100061
  • WTE4-P-DOME-R4-RP SKU changed to BR-100495
  • WTE4-M-END-CAP-BLANK-R2-RP SKU changed to BR-100184
  • WTE4-M-END-CAP-10XM10-R2-RP SKU changed to BR-100170
  • WTE4-M-END-CAP-18XM10-R2-RP SKU changed to BR-101113

8 June 2023

  • WTE3-P-END-CAP-R1-RP SKU changed to BR-100630
  • WTE3-P-DOME-R1-RP SKU changed to BR-101059
  • WTE3-M-END-CAP-R1-RP SKU changed to BR-100949-999
  • WTE3-M-END-CAP-4-HOLE-R1-RP SKU changed to BR-100949-004
  • WTE3-M-END-CAP-7-HOLE-R1-RP SKU changed to BR-100949-007

1 June 2023

  • WTE2-P-END-CAP-R2-RP SKU changed to BR-100094
  • WTE2-P-DOME-R1-RP SKU changed to BR-100859

1 June 2023

  • WTE2-M-LOCKING-FLANGE-CAP-BLANK-R2-RP SKU changed to BR-100276-999
  • WTE2-M-LOCKING-FLANGE-CAP-2-HOLE-R2-RP SKU changed to BR-100276-002
  • WTE2-M-LOCKING-FLANGE-CAP-4-HOLE-R2-RP SKU changed to BR-100276-004

10 March 2023

  • WTE4-M-END-CAP-BLANK-R2 - Initial release
  • Redesigned for increased depth rating

27 February 2023

  • WTE4-M-END-CAP-10XM10-R2 - Initial release
  • Redesigned for increased depth rating

20 December 2022

  • WTE4-M-END-CAP-4XM14-1XM10-R1 - Initial release
  • WTE4-M-END-CAP-8XM14-2XM10-R1 - Initial release
  • WTE4-M-END-CAP-8XM14-7XM10-R1 - Initial release
  • WTE4-P-END-CAP-R1 - Minor revision
    • SKU changed to WTE4-P-END-CAP-BLANK-R1

29 November 2022

  • WTE4-M-END-CAP-18-HOLE-R2 - Minor revision
  • SKU changed to WTE4-M-END-CAP-18XM10-R2

19 November 2019

  • WTE2-M-LOCKING-FLANGE-CAP-BLANK-R1 - Initial release
  • WTE2-M-LOCKING-FLANGE-CAP-2-HOLE-R1 - Initial release
  • WTE2-M-LOCKING-FLANGE-CAP-4-HOLE-R1 - Initial release
  • WTE2-P-END-CAP-R2 - Initial release
  • WTE2-P-DOME-R1 - Initial release

13 November 2018

  • WTE4-M-END-CAP-18-HOLE-R2 - Initial release

20 April 2018

  • WTE4-P-DOME-R4 - Initial release

27 December 2017

  • WTE3-P-DOME-R1 - Initial release

28 December 2016

  • WTE4-M-END-CAP-5-HOLE-R1 - Initial release
  • WTE3-M-END-CAP-7-HOLE-R1 - Initial release

17 March 2016

  • WTE3-M-END-CAP-4-HOLE-R1 - Initial release
  • WTE3-M-END-CAP-R1 - Initial release

29 Jan 2016

  • WTE4-M-END-CAP-14-HOLE-R1 - Initial release

13 November 2015

  • WTE4-M-END-CAP-R1 - Initial release

24 September 2015

  • WTE3-P-END-CAP-R1 - Initial release

1 September 2015

  • WTE4-M-END-CAP-10-HOLE-R1 - Initial release

31 March 2015

  • WTE4-P-END-CAP-R1 - Initial release
Watertight Enclosure (WTE) User Guide
Learn how to assemble and use a Watertight Enclosure!
Pressure Relief Valve Installation and Usage
Learn how to install the PRV on your watertight enclosure and use its related accessories!
Using the Vacuum Plug and Hand Pump
Ensure the O-ring seals are good on our WTE with this quick test!
Fighting Galvanic Corrosion with Zinc and Tef-Gel
Learn how to protect from galvanic corrosion through a combination of isolation via lubricant and use of a sacrificial anode—zinc!

Blue Robotics Forums – Watertight Enclosures

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