1、“M-A-121 December 16.1966 SUPERSEDING June 22, 1962 RIIL-A-1164C FEDERAL SPECIFICATION ADHESIVE, BONDING VULCANIZED SYNTHETIC RUBBER TO STEEL This specification was ap2ul.oved by the Commissione.r, Federal Supply Serv- ice, General Services Administration, for the use of all Federal agencies. 1. SCO
2、PE AND CLASSIFICATION 1.1 This specification covers adhesives for bonding vulcanized synthetic rubber gaskets, matting, and similar items to steel. 2. APPLICABLE DOCUMENTS 2.1 specifications and standards. The fol- lowing specifications and standards, of the issues in effect on date of invitation fo
3、r bids or request for proposal, form a part of this specification to the extent specified herein. Federal Specifications: PPP-C-96-Cans, Metal, 28 Gage and Lighter. PPP-G-460“Glass Containers, One Gal- lon Capacity and Smaller, For Other Than Medicinal Products ; Packaging and Packing Of. Federal St
4、andard: Fed. Std. No. 123-Marking For Domes- tic Shipment (Civilian Agencies). (Activities outside the Federal Government may obtain copies of Federal Specifications, Standards, and Handbooks as outlined under General Informa- tion in the Index of Federal Specifications and Standards and at the pric
5、es indicated in the Index. The Index, which includes cumulative monthly sup- plements as issued, is for sale on a subscription basis by the Superintendent of Documents, U. S. Government Printing Office, Washington, D. C. 20402. (Single copies of this specification and other product specifications re
6、quired by activities outside the Federal Government for bidding purposes are available without charge at the General Services Administration Regional Offices in Boston, New York, Washington, D. C., Atlanta, Chicago, Kansas City, Mo., Dallas, Denver, San Francisco, Los An- geles, and Seattle, Wash, (
7、Federal Government activities may obtain copies of Federal Specifications, Standards, and Hand- books and the Index of Federal Specifications and Standards from established distribution points in their agencies.) Military Standards: MIL-STD-105“Sampling Procedures and Tables for Inspection by Attri-
8、 butes. MIESTD-129“Marking For Shipment (Copies of Military Specifications and Standards required by contractors in connection with specific procurement functions should be Qbtained from the procuring activity or as directed by the contracting officer.) and Storage. 2.2 Other publications. The follw
9、ing docu- ments form a part of this specification to the extent specified herein. Unless otherwise indicated, the issue in effect on date of invi- tation for bids or request for proposal shall apply. Official Classification Committee (OCC) : Uniform Freight Classification Rules, (Copies may be obtai
10、ned from the Official Classi- fication Committee, 1 Park Ave. at 33rd St., Nem York, N. Y., 10016.) Department of Commerce: Code of Federal Regulations. 49 CFR 71-78-Interstate Commerce Commission Rules and Regulations For Transportation of Explosives and Other Dangerous Articles, (Copies may be obt
11、ained from the Superintendent of Documents, U. S. Government Printing Office, Washington, D. C., 20402.) FSC 8040 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MMM-A-121 Mmufacturing Chemhts Assohtion. Mart. Ud: L-I-Warning Labels. (Copies may be o
12、btained $rom the Manufacturing Chemists Association, Inc, 1625 Eye st., N. W., Washington, D. G, 20006.) (Technical society and technical association speci- fications and etandards are generally available for reference from libraries. They are also distributed among technical groups and using Federa
13、l agen- cies.) 3. REQUIREMENTS 3.1 Quallfication. The adhesive furnished under this specification shall be products which are qualified for listing on the appli- cable qualified product list at the time set for opening of bids (see 4.2 and 6.3). 3.2 Material. The adhesive material shall be of the be
14、st commercial quality, ready for use, and shall have no deleterious effect on steel surfaces to which it is applied. The ad- hesive shall be free from material which will be toxic to personnel under normal condi- tions of use, 3.3 Physical requirements, The adhesive material shall conform to the req
15、uirements epecified in table I. 3.4 Marking. Each container of material shall be labeled giving adequate instructions for we and application of contents. The name of the manufacturer, specification number, and month and year of manufacture shall also be indicated on the label. TABLE I. Physical requ
16、irements for adhesive Require- Test ment procedure Viecosity, flow time, seconds, maximum 4.6.1 150 Solids content, variation from qualification test values, percent, maximum 10 4.6.2 Weight of filled containers, variation from average of qualification test values, percent, maximum 6 4.6.3 2 TABLE I
17、. Physical requirements for adhesive (mtd) Require- Test ment Procedure Wet adhesion, inches, maxi- mum Adhesion after salt water im- 4.6.4 8 imum Initial adhesion, inches, max- 4.6.4 3 4.6.4 3 inches, maximum Adhesion at 140 F, (60” C.), 4.6.4 3 mersion, inches, maximum Stability of adhesive (wet a
18、d- hesion test), inches, max- mum 3 4.6.6 After storage for one year at room temperature, the ad- hesive shall be certified to meet the requirements of this Specification 4.6.6 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection, Unless otherwise specified in the contract or pur- chase
19、 order, the supplier is responsible for the performance of all inspection require- ments as specified herein. Except as other- wise specified, the supplier may utilize his own facilities or any commercial laboratory acceptable to the Government. The Govern- ment reserves the right to perform any of
20、the inspections set forth in the specification where such inspections are deemed necessary to assure that supplies and services conform to prescribed requirements. 4.2 Qualification teshl Qualification tests shall be conducted at a laboratory satisfac- tory to the Naval Ship Engineering Center. Thes
21、e tests shall consist of the tests speci- fied in 4.6. 4.2.1 Standard gasket stocks having the following recipes shall be used to evaluate adhesive materials : 1 Application for qualification tests shall be made in accordance with “Provisions Governing Quali- fication” (see 6.3 and 6.4). Provided by
22、 IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Class 1 Stabilized chloroprene polymer (neoprene WRT) Stearic acid (triple pressed) Extra light calcined maeesia (Maglite D) Medium thermal carbon black (Thermax) Clay (Dixie) Phenyl-alpha-naphthylamine (Neozone A
23、) Paraffin (mp 126 to 127“ F.) (mp 61.6 to 62.7“ C.) Whiting (Atomite) Light process oil (Circo) Zinc oxide (fiotox 166) 2“ercapto-imidazoline (NA-22) Solid petrolatum Class 2 (Synpol 1600) Cold polymerized styrene-butadiene rubber Fine furnace carbon black (Statex B) Sulfur (spider) Stearic acid (t
24、riple pressed) Zinc oxide (Protox 166) Fine thermal carbon black (P33) Naphthenic hydrocarbons plasticizer (Galiflux Tetramethyl Muram disulfide (methyl tuads) Whiting (Atlmite) 610) Class 3 (Paracril B) Medium low acrylonibile-butadiene copolymer Medium thermal ca+n black (Thermax) Whiting (Atomite
25、) Zinc oxide (Protox 166) Stearic acid (triple pressed) Coumarone indene softener (CFar PIO) Dibutyl phthalate Phenyl-beta-naphthylamine (Agerite powder) Tetramethyl thiuram disulfide (methyl tuads) Sulfur (spider) 100 2 2 10 45 2 2 2 60 16 2 0.5 100 20 2 2 6 20 70 26 0.4 190.0 91.6 27.7 6 1 20 .lo
26、1 0.3 1.6 MMM-A-12li Cure for 114 inch thickness40 min. at 310“ F. (164“ C.) Cure for li4 inch . thickness20 min. at 310“ F. (154 C.) Cure for li4 inch thickness-20 min. at 810 F. (164“ C.) 4.3 Sampling. 4.3.1 Lot. For purposes of sampling, exam- ination, and tests, a lot shall consist of ma- terial
27、 from one production batch and offered for delivery at one time. 4.3.2 Sampling for examination. of flled containers. A random sample of filled con- .tainers shall. be taken in accordance with tlje sampling plan specified in table 11 fdr examination as specified in 4.4. 4.3.2.1 Defects defined. A mj
28、or defect is a defect that is likely .to result in failure, or to reducematerially the Usability of the unit of product fr its intended purpose. A minor; defect is a defect that is not 1ikely.to reduce materially the usability of the unit of prod; uct for its intended purpose, .or is a de: parture f
29、rom established standards having little bearing on the effective use or opera- tion of the unit. 4.3.3 Sampling for quality confornul tests. From each lot, filled containers sa be selected in sufficient quantity to make the two one-quart samples for testing as specified in 4.6. 4.4 Examination of fi
30、lled containers. Each of the filled containers selected ri aco?dri 2i Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MMM-A-L21 80 W 7797774 000bb17 3 m WMM-A-121 TABLE II. Sampli7tg for examination of filled containers Lot size number of filled cont
31、ainers UP to 5 6 to 26 26 to 62 63 to 160 161 to 410 411 to 1000 100.1 to 2560 2561 to 6250 6251 to 16,000 Sample size number of filled containers to be sampled All 5 8 13 20 32 50 80 126 with 43.2, shall be examined to determine compliance with the requirements of weight (see 3,3) and section Fi. C
32、ontainers shall be examined for the defects listed in table III. Any container that is found not in conform- ance with the requirements for weight or section 5 shall be rejected, and if the number of defective containers exceeds the applica- ble acceptance numbers specified in table II, this shall b
33、e cause for rejection of the lot represented by the sample. 4.5 Quality conformance tests. The con- fners of material taken in accordance with ?3, shall be formed into two test samples otone-quart each. Each test sample shall be s6parately subjected to the following tests: Teet I Reference vhcoeity
34、Rolida content ,Wet adhesive etrength 4.6.1 4.6.2 4.6.4 4.5.1 Rejection. If any sample represent- ing a lot is found to be not in conformance .dth this specification, it shall be cause for Number of nonconforming or defective containers Total defects Major defects (major plus minor) Accept - O O 1 1
35、 2 3 6 7 rejection of the lot represented by the sam- ple. 4.6 Test procedures. 4.6.1 Viscosity test. 4.6.1.1 Apparatm. A cup of the dimensions specified in figure 1 (commonly called a Ford cup), shall be used. 4.6.1.2 Procedure. Both the sample of ad- hesive and the apparatus shall be condi- tioned
36、 for 4 hours at the testing temperature of 23 t1.1 C. (78.5O =t2 F.) before start- ing the test. Mix the adhesive material thor- oughly. Level the apparatus and then place one finger over the 1/4 inch orifice of the cup and immediately fill with the adhesive. Allow air bubbles to rise momentarily an
37、d then take the finger away from the orifice of the cup, and simultaneously start a stop- watch. Observe the stream flowing from the orifice and at the first break in the stream, stop the watch. This test shall be run in duplicate using a new sample of ma- terial for each determination. Record the t
38、ime in seconds for each determination, a Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Examine Containers Packing Shipping container MMM-A-L2L 80 TABLE III. List of defects Defects Major Warning marking or labels not pro- vided to protect personnel
39、 from burns, toxicity, asphyxiation, or ex- plosion. Evidence of unit container leakage. Container not type specified; not new. Container metal thickness (cans only) not in accordance with established commercial practice for type of con- tainer and product container. Closure not the type specified;
40、not tight. (a) Screwcap. (b) Multiple friction plug. (c) Lug cover. (d) Tight head plug and vent, Size (capacity) not as specified. Inner seal (metal friction type) not Gasket missing; not seated or damaged. Gaskets not of material compatible with the product contained. Marking (as to content) not a
41、s speci- fied, incomplete, or illegible; dam- aged. Container coating (internal) not com- patible with product contained; ex- ternal coating damaged. Product containers not all of same type and capacity. Arrangement of product containers not as specified. Separators, buffer-pads, cell spacers not as
42、 specified; closures, handles, or bails not protected. Commercial packing (level G) (when specified) not conforming to carriers rules and regulations; does not in- sure safe delivery at destination. Not conforming to the applicable speci- fication; damaged, Not filled: Closing and strapping (leve1 A
43、) not as specified. Reinforcing tape (fiber boxes) (when used) not applied as specified; not type of tape specified. Steel strapping not the type specified. Palletized unit loads (when authorized for pails and drums) not palletized as specified, Closing of class 1 fiber boxes (level B packing) (when
44、 specified by Army) not accomplished as specified. seated; damaged. 9999771.1 O006620 T “M-A-121. TABLE III. List of defects (contd) Examine Defects Minor Shipping Dents, scratches, not clean. containers Closures damaged (burrs, sharp edges). (Cont9d) Evidence cf rust or corrosion. Bail or handle mi
45、ssing or damaged. Marking of intermediate container in- correct, incomplete, not legible, Marking of shipping container incor- rect, incomplete, not legible, omitted, improper size, location, sequence, QF method of application. 4.6.2 Solids content. 4.6.2.1 Procedure. A suitable container with cover
46、 shall be weighed, and approxi- mately ten grams of thoroughly mixed adhesive shall be poured into the tared .con- tainer, covered, and weighed. After removing the cover, the container shall be placed in an oven at 70“ “1.1“ C. (168“ F. +2O F.), until the sample reaches a constant weight. The covere
47、d container with the sample shall be cooled to 23“ A1.1 C. (73.6“ rt2O F.), in a desiccator before weighing. The test shall be run in duplicate. total solids shall be calculated as follows : 4.6.2.2 Calculations. The percentage of the weight of the residue the weight of the sample Total solids, perc
48、ent = x 100 Both determinations shall be reported. 4.6.3 Weight. The weight of each filled con- tainer sampled shall be determined, The weights of the filled containers in the quali- fication sample shall be averaged, 4.6.4 Strip adhesion. 4.6.4.1 Specimens. The rubber gasket rn* terials used for th
49、is test shall be prepared as specified in 4.2.1, and the sheet steel pan- els to which the rubber strips are bonded shall be hot rolled sheet, commercial quali- ty. Strips of rubber material measuring 1 by 6 by 1/4 inch shall be bonded to steel panels, 2 by 6 by 1/8 inch in dimensions. Strip ad- E Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIMM-A421 hesioh tests shall be conducted in triplicate Notes: o
