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Product Data Sheet

Updated

:February 2010

Supersedes

: September 2008

Product Description

Scotch-Weld PS77 is a single component, medium strength, anaerobic pipe

sealant.

PS77 is a thixotropic pipe sealant that cures quickly on steel pipes.

Scotch-Weld PS77 cures when confined in the absence of air between close-fitting

metal surfaces.

Key Features

Scotch-Weld PS77 is formulated to lock and seal medium to coarse straight and

tapered pipe threads on pipes of diameter from 15mm to 80mm. PS77 prevents

vibration loosening and leakage through the pipe threads. PS77 is formulated to

give medium strength break torque, but lower prevail torque on assembled joints,

thus enabling easier disassembly and servicing. Pipe joints made with PS77

should be fully torqued up within a maximum of 15 minutes from initial assembly.

PS77 will give a rapid low pressure seal (after 20 mins).

Physical Properties

Chemical Type

Dimethacrylate

Appearance

Fluorescent Yellow

Specific Gravity

1.12

Viscosity cPs

(Brookfield RVT spindle 5, 2.5rpm)

Range

35,000

– 60,000

Typical Value 48,000

Viscosity cPs

(Brookfield RVT spindle 5, 20rpm)

Range

10,000

– 20,000

Typical Value 15,000

Performance

Characteristics

Maximum Gap Fill

0.25mm

Fixture Time

15mins

Full Cure

24hrs

Strength Build Up

15 mins = Finger tight

1 hours = ~40% strength

24hours = 100% strength

Breakaway Torque N.m

(10964)

Range 8-18

Typical 16

Prevail Torque N.m

(10964)

Range 2-10

Typical 4.5

Service Temperature Range

-50 to +150ºC