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303 Stainless Steel Gasketed Window Sights allow visual observation of liquid levels and their condition. Stainless steel is resistant to corrosion, rust, and staining.  It maintains its appearance over long periods and minimizes unwanted bonding between parts.  Straight threaded window sights may be screwed into tapped holes or used with mounting nuts for drilled holes.  They can be used to display fluid motion or mechanical movements, as well as to view and perform tests in a safe enclosure. Specific uses include fluid sighting on hydraulic tanks, pressure vessels, reservoirs, packaged power equipment, hydraulic lines and dipping. Their use can be applied to any application where oil or fluid inspection is essential.

B4764 and B4797 Category Photo SS Gasket WS Straight Thread
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Item #

Thread Type

Thread Size

Hex Size

Sight

Seals

Reflector

Max Pressure

Body

B4764-01B N/A Straight With Nut N/A 1/2"-20 N/A 11/16" Hex N/A 5/16" dia N/A Buna-N N/A None N/A 125 PSI N/A 303 Stainless Steel
B4764-02B N/A Straight With Nut N/A 5/8"-18 N/A 13/16" Hex N/A 7/16" dia N/A Buna-N N/A None N/A 125 PSI N/A 303 Stainless Steel
B4764-03B N/A Straight With Nut N/A 3/4"-16 N/A 15/16" Hex N/A 9/16" dia N/A Buna-N N/A None N/A 125 PSI N/A 303 Stainless Steel
B4764-04B N/A Straight With Nut N/A 1"-14 N/A 1 1/4" Hex N/A 25/32" dia N/A Buna-N N/A None N/A 125 PSI N/A 303 Stainless Steel
B4764-05B N/A Straight With Nut N/A 1 1/4"-12 N/A 1 1/2" Hex N/A 1" dia N/A Buna-N N/A None N/A 100 PSI N/A 303 Stainless Steel
B4764-06B N/A Straight With Nut N/A 1 1/2"-12 N/A 1 3/4" Hex N/A 1 19/64" dia N/A Buna-N N/A None N/A 50 PSI N/A 303 Stainless Steel
B4764-07B N/A Straight With Nut N/A 1 3/4"-12 N/A 2" Hex N/A 1 17/32" dia N/A Buna-N N/A None N/A 50 PSI N/A 303 Stainless Steel
B4764-08B N/A Straight With Nut N/A 2 1/4"-12 N/A 2 1/2" Hex N/A 1 31/32" dia N/A Buna-N N/A None N/A 50 PSI N/A 303 Stainless Steel
B4764-12B N/A Straight With Nut N/A 5/8"-18 N/A 13/16" Hex N/A 7/16" dia N/A Buna-N N/A Stainless Steel N/A 125 PSI N/A 303 Stainless Steel
B4764-13B N/A Straight With Nut N/A 3/4"-16 N/A 15/16" Hex N/A 9/16" dia N/A Buna-N N/A Stainless Steel N/A 125 PSI N/A 303 Stainless Steel
B4764-14B N/A Straight With Nut N/A 1"-14 N/A 1 1/4" Hex N/A 25/32" dia N/A Buna-N N/A Stainless Steel N/A 125 PSI N/A 303 Stainless Steel
B4764-15B N/A Straight With Nut N/A 1 1/4"-12 N/A 1 1/2" Hex N/A 1" dia N/A Buna-N N/A Stainless Steel N/A 100 PSI N/A 303 Stainless Steel
B4764-16B N/A Straight With Nut N/A 1 1/2"-12 N/A 1 3/4" Hex N/A 1 19/64" dia N/A Buna-N N/A Stainless Steel N/A 50 PSI N/A 303 Stainless Steel
B4764-17B N/A Straight With Nut N/A 1 3/4"-12 N/A 2" Hex N/A 1 17/32" dia N/A Buna-N N/A Stainless Steel N/A 50 PSI N/A 303 Stainless Steel
B4764-18B N/A Straight With Nut N/A 2 1/4"-12 N/A 2 1/2" Hex N/A 1 31/32" dia N/A Buna-N N/A Stainless Steel N/A 50 PSI N/A 303 Stainless Steel
B4797-01B N/A Straight N/A 1/2"-20 N/A 11/16" Hex N/A 5/16" dia N/A Buna-N N/A None N/A 125 PSI N/A 303 Stainless Steel
B4797-02B N/A Straight N/A 5/8"-18 N/A 13/16" Hex N/A 7/16" dia N/A Buna-N N/A None N/A 125 PSI N/A 303 Stainless Steel
B4797-03B N/A Straight N/A 3/4"-16 N/A 15/16" Hex N/A 9/16" dia N/A Buna-N N/A None N/A 125 PSI N/A 303 Stainless Steel
B4797-04B N/A Straight N/A 1"-14 N/A 1 1/4" Hex N/A 25/32" dia N/A Buna-N N/A None N/A 125 PSI N/A 303 Stainless Steel
B4797-05B N/A Straight N/A 1 1/4"-12 N/A 1 1/2" Hex N/A 1" dia N/A Buna-N N/A None N/A 100 PSI N/A 303 Stainless Steel
B4797-06B N/A Straight N/A 1 1/2"-12 N/A 1 3/4" Hex N/A 1 19/64" dia N/A Buna-N N/A None N/A 50 PSI N/A 303 Stainless Steel
B4797-07B N/A Straight N/A 1 3/4"-12 N/A 2" Hex N/A 1 17/32" dia N/A Buna-N N/A None N/A 50 PSI N/A 303 Stainless Steel
B4797-08B N/A Straight N/A 2 1/4"-12 N/A 2 1/2" Hex N/A 1 31/32" dia N/A Buna-N N/A None N/A 50 PSI N/A 303 Stainless Steel
B4797-12B N/A Straight N/A 5/8"-18 N/A 13/16" Hex N/A 7/16" dia N/A Buna-N N/A Stainless Steel N/A 125 PSI N/A 303 Stainless Steel
B4797-13B N/A Straight N/A 3/4"-16 N/A 15/16" Hex N/A 9/16" dia N/A Buna-N N/A Stainless Steel N/A 125 PSI N/A 303 Stainless Steel
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