---
title: "ASTM D2148"
url: "https://mat-cs.com/astm-d2148"
description: "These test methods cover tests for bondable silicone rubber tapes which form a sealed structure either with the application of heat (and pressure if needed) or by the process of auto-adhesion (self-fusing)."
---

ASTM Standard

# ASTM D2148

Standard Test Methods for Bondable Silicone Rubber Tapes Used for Electrical Insulation

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## Significance and Use

5.1 Self-adhesion is a primary initial property since it affects layer-to-layer bonding. The integrity of the bond can significantly affect the electrical and physical performance of the insulation system. Therefore, the degree of self-adhesion is directly related to apparatus performance.

5.2 A high degree of self-adhesion is desirable for most electrical applications. In this test, a short unwinding length indicates a high degree of self-adhesion.

5.3 This test method has been found useful as a quality control test for lot acceptance.

## Scope

1.1 These test methods cover tests for bondable silicone rubber tapes which form a sealed structure either with the application of heat (and pressure if needed) or by the process of auto-adhesion (self-fusing).

1.2 These test methods appear in the following sections:

Test Method

Section

Adhesion

3 – 10

Bond Strength

11 – 18

Dielectric Breakdown Voltage

19 – 26

Hardness

41

Length

33 and 34

Thickness

27 – 32

Width

36 – 40

1.3 Units—The values stated in SI units are the standard. The inch-pound units in parentheses are for information only. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.