MIL-R-83283 Rubber Silicone, High Strength, Cabin Pressure Seal Material, Diaphragm Type S/S By Sae-Ams-R-83283This specification covers 45 durometer hardness, high strength silicone rubber.

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MIL-R-83283A(USAF)

4.2 Classification of inspections. The inspection requirements specified herein are classified as follows:

a. First article inspection (see 4.4)

b. Quality conformance inspection (4.5).

4.3 Inspection conditions. Unless otherwise specified, all inspections shall be performed in accordance with the test conditions specified in section 4.

4.3.1 Test condition. Unless otherwise specified herein, all test specimens shall be conditioned and tested at normal laboratory conditions or in accordance with table III. In case of dispute over test results, the tests shall be repeated using standard conditions in accordance with 4.3.2.

4.3.2 Standard conditions. Standard conditions shall be 50 +15 percent relative humidity and at a temperature of 75F0 +50F.

4.3.4 Lot. A lot shall consist of all material of the same identity cured in the same production run, from the same batch, and submitted at the same time for inspection.

4.3.5 Batch. A batch shall be the quantity of material compounded on a mill or mixer at one time.

4.4 First article inspection First article inspection shall consist of all the tests specified herein (see 4.6).

4.4.1 First article samples. First article test samples shall be obtained from 6 by 6 by

0.075 +0.005 inch molded sheets.

4.4.2 First article tests. The first article tests shall meet all the requirements in 3.4 when tested in accordance with 4.6.

4.5 Quality conformance inspection. Quality conformance inspection shall consist of sampling plans A, B, C, and D.

4.5.1 Sampling. Unless otherwise indicted herein, sampling for quality conformance inspection shall be in accordance with MIL-STD-105. Quality conformance tests are required on final parts for all production lots of material.

4.5.2 Inspection of materials and components. The supplier is responsible for insuring that materials and components used where manufactured, tested, and inspected in accordance with referenced subsidiary specifications and standards to the extend specified, or if none, in accordance with this specification (see 4.1). In the event of conflict, this specification shall govern.