MIL-DTL-25988C
4. VERIFICATION
4.1 Classification of inspections
The inspection and testing of the synthetic rubber shall be classified as follows:
First article inspection (see 4.2).
a.
b.
Conformance inspection (see 4.3).
4.2 First article inspection
4.2.1 Samples
Test samples for type I material shall be restricted to O-rings from a production lot conforming to
size 214 of MIL-R-25988/1. Hardness shall be determined on specimens of sufficient
dimensions to comply with ASTM D 2240. Samples for type II material shall be obtained from
6 inches by 6 inches by 0.075 inch (152.4 mm by 152.4 mm by 1.905 mm) platen sheets. All
samples shall be of identical composition and comparable state of cure as that of the end items.
4.2.2 Tests
First article tests shall consist of all the tests specified in 4.5 and shall be performed at a
laboratory accredited to AS 9100 or ISO 17025.
4.2.3 First article test report
First article tests are required for each type, class, and grade of material furnished to this
specification. After the supplier completes the first article inspection he shall prepare a first
article test report (see 6.2.1).
4.2.4 Inspection conditions
Unless otherwise specified, all inspections shall be performed in accordance with the test
conditions specified in applicable test method document or applicable paragraphs in the
specification.
4.3
Conformance inspection
4.3.1 Sampling for inspection
The method shall be specified in a purchase order/contract. If not specified, product shall be
taken at random from each lot to perform all the required acceptance tests. The number of test
iterations for each requirement shall be specified in the applicable test procedure. Quality
conformance tests are required on final products for all production lots of material.
4.3.1.1 Batch
A batch shall be the quantity of material compounded on a mill or mixer at one time.
12
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business