3M 850

3M 850 can generally be used for splicing and applications where chemical resistance and/or clean removal is necessary.
The silver backing is a transparent polyester with a thin layer of aluminum.

Backing: Polyester
Adhesive: Acrylic
Color: Transparent, Red, Black, White, Silver
Standard Roll Length:72 yds. (65.8 m)

Data Sheet

Features

Applications

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3M 850 Data Sheet

3M Polyester Film Tape 850
Product Construction
Backing	Adhesive	Color	Standard Roll Length
Polyester	Acrylic	Transparent, Red, Black, White, Silver	72 yds. (65.8 m)
Typical Physical Properties
			ASTM Test Method
Adhesion to Steel:	30 oz./in. width (33 N/100 mm)		D-3330
Silver:	42 oz./in. width (46 N/100 mm)		D-3330
Tensile Strength at Break:	28 lbs./in. width (491 N/100 mm)		D-3759
Elongation at Break:	1.2		D-3759
Backing Thickness:	0.9 mils (0.02 mm)		D-3652
Total Thickness:	1.9 mils (0.05 mm)		D-3652
Water Vapor Transmission Rate:	1.6 gms, H2O/100 sq. in./24 hrs.		D-3833
Silver:	(24.8 g/m2/24 hrs.) 0.9 gms, H2O/100 sq. in./24 hrs. (7.75 g/m2/24 hrs.)		D-3833
Temperature Use Range:	-60 - 300°F (-50 - 150°C)
Remarks: The above technical information and data should be considered representative or typical only and should not be used for specification purposes.

3M 850 Features

Aggressive acrylic adhesive provides a quick stick and excellent long-term holding in splicing applications
Thin, high-strength polyester film meets low caliper requirements which won't interfere with most machinery processes
Polyester backing resists tearing and protects surfaces from abrasion and rough handling
Temperature resistance enables the tape to perform in high-temperature operations
Meets a variety of aerospace specifications
The silver version is highly visible for applications where marking or identification is required
Low modulus, low Shore A Hardness
Prolonged exposure to sunlight or hot caustics will cause the backing to become brittle and lose tensile strength.
The thin, high-strength polyester film helps reduce failures due to breakage while meeting low caliper requirements.
Chemical and solvent resistance to help reduce rejects produced from chemical and solvent attacks.
Abrasion is resistant to help protect surfaces from abrasion and rough handling.
Variety of colors is offered when easy detection is required.