L-P-391D
November 19, 1975
SUPERSEDING
Fed. Spec. L-P-391C
May 28, 1971
FEDERAL SPECIFICATION
PLASTIC SHEETS, RODS AND TUBING, RIGID CAST,
METHACRYLATE (MULTIAPPLICATION)
This specification was approved by the Commissioner, Federal Supply Service,
General Services Administration, for the use of all Federal agencies.
1. SCOPE AND CLASSIFICATION
1.1 Scope. This specification covers methacrylate sheets, rods and tubes
produced by casting or machining cast blanks. This specification does not
apply to heat-formed and molded or extruded shapes, or shapes made by assem-
bling two or more pieces.
1.2 Classification (see 6.4)
1.2.1 Types and grades. The methacrylate sheets, rods, and tubes
conforming to this specification shall be of the following items, types, and
grades, as specified (see 6.2).
Item A - Plastic sheet.
Item B - Plastic rod.
Item C - Plastic tubing.
Item D - Plastic sheet having an abrasion resistant coating.
Type I - General purpose material having ultraviolet light
absorbing properties.
Type II - Special use material not having an ultraviolet
light absorber.
Type III - Type I sheet having an abrasion resistant coating on
one or both sides.
The following grades apply to both types I and II material. Grades B and C
sheet apply to type III sheet.
Grade AÀ1Ù - Special sheeting, thermally preshrunk sheet having
a smooth glossy surface.
FSC 9330, 9390
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