Self-sealing elbow. Ensure maximum pipe insulation protection for those hard-to-seal T joints and elbows. No. PF38058T2: Wall Thickness: 3/8 In., Material: Polyethylene, Pipe Size: 1/2 In. Copper, 3/8 In. Iron, Length: N/A, Temperature Range: -90 F to 180 F, R Value: 3.7, Color: Gray, Pkg Qty: 1 No. PF38078T2: Wall Thickness: 3/8 In., Material: Polyethylene, Pipe Size: 3/4 In. Copper, 1/2 In. Iron, Length: N/A, Temperature Range: -90 F to 180 F, R Value: 2.35, Color: Gray, Pkg Qty: 1 No. PF38118T2: Wall Thickness: 3/8 In., Material: Polyethylene, Pipe Size: 1 In. Copper, 3/4 In. Iron, Length: N/A, Temperature Range: -90 F to 180 F, R Value: 2.35, Color: Gray, Pkg Qty: 1 No. PF38058T5: Wall Thickness: 3/8 In., Material: Polyethylene, Pipe Size: 1/2 In. Copper, 3/8 In. Iron, Length: N/A, Temperature Range: -90 F to 180 F, R Value: 2.35, Color: Gray, Pkg Qty: 1 No. PF38078T5: Wall Thickness: 3/8 In., Material: Polyethylene, Pipe Size: 3/4 In. Copper, 1/2 In. Iron, Length: N/A, Temperature Range: -90 F to 180 F, R Value: 2.35, Color: Gray, Pkg Qty: 1 No. PF38118T5: Wall Thickness: 3/8 In., Material: Polyethylene, Pipe Size: 1 In. Copper, 3/4 In. Iron, Length: N/A, Temperature Range: -90 F to 180 F, R Value: 2.35, Color: Gray, Pkg Qty: 1