1964_IMPORT_AND_EXPORT_(STRATEGIC_COMMODITIES)_REGULATIONS — Page 146

G 146

CAP. 60]

Import and Export (Strategic Commodities) Regulations

[1988 Ed.

[Subsidiary]

IL 1754

IL 1755

(c) Total number of minor optical defects (excluding those within 25.4 mm (1 inch) of the sheet edge) as follows:

(1) Not exceeding 1 per 0.368 m2 (4 ft2) for sheet which is 12.7 mm (0.5 inch) or less in thickness; or

(2) Not exceeding 2 per 0.092 m2 (1 ft2) for sheet over 12.7 mm (0.5 inch) in thickness.

Technical Note:

"Major defects" are defined as variations in the material which cause angular deviations either side of the undeviated position in excess of those listed in sub-item (b) above. Minor defects include any embedded particles, bubbles, scratches or internal inhomogeneity with a major dimension of at least 0.250 mm, and those localized imperfections which cause a variation in angular deviation of more than 5 minutes within a distance of not more than 508 mm (20 inches) on the screen when tested by method ASTM D637. (It is not intended that the entire sheet be quantitatively surveyed for such variation in deviation, but that localized imperfections which are suspected of being detrimental be evaluated by means of this test).

(For manufactures thereof, see Item ML10 off the Munitions List.)

Fluorinated compounds, materials and manufactures thereof, as follows--

(a) Compounds, as follows:

(1) Dibromotetrafluoroethane, except that having a purity of 99.8 per cent or less and containing at least 25 particles, of 200 micrometres or larger in size, per 100 ml;

(2) Perfluoroalkylamines;

(b) Polymeric materials and intermediates, unprocessed, as follows:

(1) Polychlorotrifluoroethylene, oily and waxy modifications only;

(2) Fluoroelastomeric compounds composed of at least 95 per cent of a combination of two or more of the following monomers: tetrafluoroethylene, chlorotrifluoroethylene, vinylidene fluoride, hexafluoropropylene, bromotrifluoroethylene, iodotrifluoroethylene, perfluoromethylvinylether and perfluoropropoxypropylvinylether;

(3) Polybromotrifluoroethylene;

(4) Copolymers of vinylidene fluoride having 75 per cent or more beta crystalline structure without stretching;

(5) Fluorinated silicone rubber and intermediates for their production containing 10 per cent or more of combined fluorine;

(c) Manufacturers, as follows:

(1) Greases, lubricants and/or dielectric, damping and flotation fluids made of at least 85% of any of the materials in (a) and (b) above;

(2) Electric wire and cable coated with or insulated with any of the materials in (b)(2) above, except oil well logging cable;

(3) Seals, gaskets, rods, sheets, sealants or fuel bladders made of more than 50 per cent of any of the materials in (b)(2) above, specially designed for aerospace and aircraft use;

(4) Piezoelectric polymers and copolymers made from vinylidene fluoride having both of the following characteristics:

(i) In sheet or film form; and

(ii) With a thickness of more than 200 micrometres.

(For hydraulic fluids using these elements, see also Item IL1702.)

Silicone fluids and greases, as follows--

(a) Fluorinated silicone fluids, except those with kinematic viscosity of 5 000 centistrokes or higher measured at 25°C;

(b) Silicone and fluorinated silicone lubricating greases capable of operating at temperatures of 180°C (356°F) or higher and having a drop point (method of test being ASTM or ITP) of 220°C (428°F) or higher.

(For hydraulic fluids using these elements, see also Item IL1702.)