Prince Rubber and Plastics - Custom Manufacturer and Fabricator of Rubber and Plastic Products for Industry

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Grid Covers


Diaphragm Cell Grid Covers
The Grid covers are used to protect the copper grid from corrosion during the electrolytic process.

Mark I & Mark ll Series
1. Grid Cover Elastomeric compound options, 1⁄4” thick
    6962 Special EPDM
    6760 Special EPDM
    HK-94 Grid Cover Elastomers, 1/4" thick, available compounds:
2. Bottom Seals
    • 6055 Special EPDM Ribbed, Easy to Seal. Available in 1-1/2", 2", 3" Widths
    • Half Round available in 3/4" or 1/2" thick
3. No Drip Trims
    • EPDM Triangles, available in 3/4" or 1/2" PDF

Mark lll & Mark lll+ Series
1. Grid Cover Elastomer, 6962 Special EPDM, available in 3/16" or 1/4" thick
2. Anode Post Gaskets, 6962 Special EPDM, used with 3/16" thick base
3. F230LP, Fluoroplastic Face
4. Bottom Seal available in:
    A. 6055 Special EPDM bonded
    B. 6055 or 6040 special EPDM with location Groove, and 3/4" half round bonded to the blanket for the purpose of locating the 6055 or 6040 Seal PDF .

Diaphragm Cell Blankets
(Mark I, II, III Series)
All Series of Mark l through Mark lll are based on Customer preference of selection of bottom seals, compound used, and armored with or without a fluoroplastic face. These selections can easily be discussed with our technical sales department.

Mark lll HB Grid Protectors

Diaphragm Cell Blankets
(Mark III HB Series)
• The New Mark III HB Grid Protector incorporates a new Hot Bond process of laminating the Special F230LP fluoroplastic film to the Panacea® 6962 EPDM Rubber.
• The New Mark III HB Grid Cover was developed to be used with synthetic diaphragms. These synthetic diaphragms that are being used more regularly in chlor-alkali diaphragm cell are exhibiting a 3+ year service life.
• In order to best utilize this new Diaphragm technology, Prince developed an improved seal system for the cathode, cell head and anode posts in the Mark III Grid Protector.


Panacea® Cell Gasketing; Top and Bottom Seals
Specially designed seal configurations are used for the top cell cover and bottom base of the cells to prevent cell leakage.

Diaphragm Cell Cathode Top Seals
• Panacea® Special EPDM Sponge Rubber with Special Configurations
• Panacea® Special EPDM Rubber Long-life, Easy-to-Seal Configurations

Diaphragm Cell Cathode Bottom Seals
• Panacea® Special EPDM Easy-To Seal configurations, comes in different widths, durometer’s and profiles.

Customer preference in durometer, surface sealabilty, material and Inquire pairing of seals can easily be discussed with our technical sales department.


Northern Headquarters: USA

Prince Rubber & Plastics Co., Inc.
45 Hazelwood Drive
Buffalo, NY 14228

Tel: (716) 877-7400
Fax: (716) 877-0743

Southern Division: USA

Prince Rubber & Plastics Co., Inc.
11400 Richcroft Drive
Baton Rouge, LA 70814

Tel: (225) 272-1653
Fax: (225) 272-1938

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