Seal Strip Replacement Guide for Ceramic Presses

Seal strips are critical sealing components in roller presses, primarily preventing powder leakage from press side seams to ensure porcelain slab forming quality. Timely and correct seal strip replacement is essential for maintaining production efficiency and product quality.

1. Seal Strip Wear Inspection Standards

Not all wear requires immediate replacement. Here are professional inspection criteria:

Thickness Wear — Replace when thickness wears to 70% or less of original thickness
Surface Cracks — Visible cracks or crazing, even minor, require attention
Deformation/Delamination — Curling edges, delamination, or peeling detected
Seal Failure — Noticeable increase in leakage, flash or burr at side seams
Operating Hours — Regular inspection recommended every 500 operating hours

2. Standard Seal Strip Replacement Procedure

Step 1: Shutdown Preparation

Stop the press and wait for temperature to drop to safe range (typically below 60°C), complete pressure release, ensure equipment is fully stationary.

Step 2: Remove Old Strip

Carefully remove old strip using specialized tools, avoiding damage to mounting slots. Observe wear patterns on removed strip for problem analysis.

Step 3: Clean Mounting Surface

Thoroughly clean mounting slots, remove residual adhesive, debris, and oxides. Use professional cleaner to ensure flat, clean surface.

Tip: After cleaning, inspect mounting slots for damage or deformation. Repair if necessary before proceeding.

Step 4: Install New Strip

Place new strip into mounting slot in correct orientation. Use dedicated pressure roller or block to apply even pressure, ensuring strip fully contacts slot bottom.

Step 5: Pre-tighten and Secure

Pre-tighten according to equipment requirements to ensure secure fixation. Preload force should be evenly distributed, avoiding localized overstress.

Step 6: Test and Verify

After startup, run at low speed to observe. Confirm normal sealing effect with no leakage or abnormal noise before normal production.

3. Installation Precautions

Important Warning: Never perform maintenance until fully cooled. High temperature can cause burns and seal component damage.

Ensure strip material matches working conditions (high temp/pressure/corrosive environments require special materials)
Verify strip model matches equipment requirements before installation
Avoid over-stretching or compressing the strip
Ensure mounting surface temperature suitable (recommended 15-35°C environment)
Record replacement time, model, and equipment status for maintenance tracking

4. Common Replacement Mistakes

Forceful Removal — Using excessive force may damage mounting slots, affecting subsequent sealing
Incomplete Cleaning — Residue causes poor new strip contact, shortening service life
Wrong Direction — Strips have front/back or directional requirements; wrong installation causes seal failure
Improper Preloading — Too tight increases wear; too loose causes seal leakage

5. GDNOS Seal Strip Products

GDNOS provides high-quality ceramic press seal strip solutions:

Imported high-strength wear-resistant materials with excellent wear performance
Precision machined to ensure dimensional tolerance ≤0.02mm, perfectly fitting major machine models
Multiple specifications available, compatible with SACMI PCR series, Keda presses, and more
Service life 40%+ longer than standard strips
Customization available for special working conditions

View GDNOS Seal Strip Products →

Frequently Asked Questions

Q: How to determine if seal strip needs replacement?

A: Replace when seal strip thickness wears to 70% or less of original thickness, or when cracks, deformation, or delamination appear. Inspection recommended every 500 operating hours.

Q: What is the standard seal strip replacement procedure?

A: Standard procedure: shutdown and cool down → release pressure → remove old strip → clean mounting surface → install new strip → pre-tighten → test run → normal operation. Professional operation recommended.

Q: What are the advantages of GDNOS seal strip products?

A: GDNOS seal strips use high-strength wear-resistant materials, precision machined to ensure dimensional tolerance ≤0.02mm. Service life is 40%+ longer than standard strips, with customization available.

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Need professional technical support? Contact GDNOS: +86 135 1270 0969

Brand names such as SACMI, KEDA, and HLT mentioned on this website are used solely to indicate product compatibility. GDNOS is not authorized by, affiliated with, or endorsed by these brands.