SOW_for_Rubber_2019_(004).doc

SCOPE OF WORK

FOR

Strip Stock Rubber Material Red River Army Depot, Rubber Products Branch has a need for a requirements contract to supply rubber strip stock to rubberize Track Shoes and Roadwheels. The contract will consist of a base year and two (2) option years. The materials are identified below with their internal production numbers and classification NSN’s.

0235:

Base Year:

250,000 LBS

POP: April 2018 – April 2019

First Option Year:

POP: April 2019– April 2020

Second Option Year:

POP: April 2020– April 2021 Third Option Year: 250,000 LBS

POP: April 2021– April 2022

Forth Option Year: 250,000 LBS

POP: April 2023– April 2024

0149:

500,000 LBS

POP: April 2019 – April 2020

POP: April 2020 – April 2021 Third Option Year: 500,000 LBS

Forth Option Year: 500,000 LBS

0135:

POP: April 2019– April 2020

POP: April 2020 – April 2021

0149 (MasterBatch):

POP: April 2019 – April 2020

POP: April 2020– April 2021

1. Red River Army Depot (RRAD) owns these formulations and desires to control access to the greatest extent possible. The formulations shall be released to prospective vendors only upon receipt of the signed RRAD Standard Nondisclosure Agreement.

2. Interested Firms shall submit sample rubber for First Article Testing (FAT) as listed below.

Samples shall be received at or prior to the date and time set for receipt of proposals. FAT testing shall conform to the test protocol listed below and the requirements of the MIL-DTL-3100H and MIL-DTL-11891G specifications.

0235 / NSN: 264000x020235 - 500 pounds

0149 / NSN: 264000x970149 - 500 pounds

0149 (MasterBatch) / NSN is TBD – 50 pounds

0135 / NSN: 264000x960135 - 150 pounds

3. Strip Stock Size:

0235: 3” ± 4/32” X 3/8” ± 2/32” thick

0149: 2 1/2” ± 4/32” X 3/8” ± 2/32” thick

0149 (MasterBatch): 2” ± 4/32” X 3/8” ± 2/32” thick

0135: 1 1/2” ± 4/32” X 3/8” ± 2/32” thick

4. Firms submitting samples for FAT shall include their internal laboratory analytical testing results. This data will be compared with RRAD test results to insure accuracy. Cure time and temperature used by RRAD for the 0235 compound is 60 minutes at 280° F. All other compounds are cured for 8 minutes at 340° F.

5. Samples shall be sent to Building 493 ATTN: Ronny Williams, Red River Army Depot and clearly marked as FAT Samples with the Solicitation number. Prior to shipment of the sample rubber the vender shall contact the Contracting Office Director, Don Kennedy (903) 334-2656 and provide a shipment date to insure proper receipt.

6. Standard commercial shipping is desired. Containers used shall be suitable for handling by forklift and be constructed to protect the contents against damage during shipment. The strips shall be coated with zinc stearate or equivalent to prevent adhesion between layers. Upon award of a contract, all shipments shall be delivered using a refrigerated truck.

Test Protocol 0235 Compound Acceptance Parameters

TEST:

ASTM:

ACCEPTANCE:

Hardness, (Shore A) D2240

63 minimum

Tensile Strength, (PSI)

D412

3100 minimum

Ultimate Elongation, (%)

350 minimum

Modulus, 300%

1700 minimum

Specific Gravity (SpG)

D297

1.18 maximum

Ozone Resistance D518 no breaks (168 hrs)

Low Temperature Resistance D2137 no breaks (-40F)

After Aging: 166 hrs/158 F

Tensile Strength, (PSI)

< 25% change

Ultimate Elongation, (%)

< 35% change

0149 Compound Acceptance Parameters

Hardness, Shore A

63-77

Tensile Strength, PSI

2100 minimum

Ultimate Elongation, %

200 minimum

1600 minimum

1.19 maximum

0149 (Masterbatch) Compound Acceptance Parameters

NOTE: Same formulation as 0149 with the exception --- does not contain curing additives --- this compound is used for purging our injection molds

Flat Line Rheometer

None

Does not Cure 0135 Compound Acceptance Parameters

Hardness, Shore A

70-80

2500 minimum

350 minimum

1800 minimum

Tear Resistance, lbs/in

D624

300 minimum

1.17 maximum