• Non-Clogging Design: The single coil spring is designed to resist clogging from sediment that may settle in stagnant fire water lines.
• Easy Installation: Component design matches the short working length of standard jockey pump stuffing boxes (e.g., Grundfos, Aurora).
Key Features
• Jockey Pump Standard: Specifically dimensioned for the 5/8" shafts common in fire protection jockey pumps (pressure maintenance pumps).
• Quick Response: The O-ring secondary seal provides immediate sealing upon pump start-up, maintaining system pressure without leakage.
• Cost-Effective Reliability: A robust, economical component seal designed for intermittent duty cycles typical of jockey pumps.
Technical Specs | Materials | ||
Mediums | Water, oil, acids, alkali, etc. | Stationary Ring | Carbon/Sic/TC |
Temperature | -20℃ to 200℃ | Rotary Ring | Carbon/Sic/TC/SUS304 |
Pressure | ≤2.5MPa | Secondary Seal | NBR/EPDM/Viton |
Speed | ≤18m/s | Spring and Metal Part | Stainless Steel |
Product Specifications
| Metric Shaft Size D1 | Size Code | D2 | D3 | D7 | L1 | L4 | L3 |
| 14 | 0140 | 18 | 33.0 | 25.0 | 32.5 | 10.00 | 8.0 |
| 16 | 0160 | 20 | 35.0 | 27.0 | 32.5 | 10.00 | 8.0 |
| 18 | 0180 | 22 | 37.0 | 33.0 | 33.5 | 11.50 | 8.5 |
| 20 | 0200 | 24 | 39.0 | 35.0 | 33.5 | 11.50 | 8.5 |
| 22 | 0220 | 26 | 40.0 | 37.0 | 33.5 | 11.50 | 8.5 |
| 24 | 0240 | 28 | 43.0 | 37.0 | 36.0 | 11.50 | 8.5 |
| 25 | 0250 | 30 | 45.0 | 40.0 | 36.0 | 11.50 | 8.5 |
| 28 | 0280 | 33 | 48.0 | 43.0 | 38.5 | 11.50 | 8.5 |
| 30 | 0300 | 35 | 50.0 | 45.0 | 38.5 | 11.50 | 8.5 |
| 32 | 0320 | 38 | 55.0 | 48.0 | 38.5 | 11.50 | 8.5 |
| 33 | 0330 | 38 | 55.0 | 48.0 | 38.5 | 11.50 | 8.5 |
| 35 | 0350 | 40 | 57.0 | 50.0 | 38.5 | 11.50 | 8.5 |
| 38 | 0380 | 43 | 60.0 | 56.0 | 38.5 | 14.00 | 9.0 |
| 40 | 0400 | 45 | 62.0 | 58.0 | 38.5 | 14.00 | 9.0 |
| 43 | 0430 | 48 | 65.0 | 61.0 | 38.5 | 14.00 | 9.0 |
| 45 | 0450 | 50 | 67.0 | 63.0 | 38.5 | 14.00 | 9.0 |
| 48 | 0480 | 53 | 70.0 | 66.0 | 38.5 | 14.00 | 9.0 |
| 50 | 0500 | 55 | 72.0 | 70.0 | 42.5 | 15.00 | 10.0 |
| 53 | 0530 | 58 | 79.0 | 73.0 | 42.5 | 15.00 | 10.0 |
| 55 | 0550 | 60 | 81.0 | 75.0 | 42.5 | 15.00 | 10.0 |
| 58 | 0580 | 63 | 84.0 | 78.0 | 47.5 | 15.00 | 10.0 |
| 60 | 0600 | 65 | 86.0 | 80.0 | 47.5 | 15.00 | 10.0 |
| 63 | 0630 | 68 | 89.0 | 83.0 | 47.5 | 15.00 | 10.0 |
| 65 | 0650 | 70 | 91.0 | 85.0 | 47.5 | 15.00 | 10.0 |
| 70 | 0700 | 75 | 99.0 | 92.0 | 52.0 | 18.00 | 10.0 |
| 75 | 0750 | 80 | 104.0 | 97.0 | 52.0 | 18.00 | 10.0 |
| 80 | 0800 | 85 | 109.0 | 105.0 | 51.8 | 18.20 | 9.8 |
| 85 | 0850 | 90 | 114.0 | 110.0 | 56.8 | 18.20 | 9.8 |
| 90 | 0900 | 95 | 119.0 | 115.0 | 56.8 | 18.20 | 9.8 |
| 95 | 0950 | 100 | 124.0 | 120.0 | 57.8 | 17.20 | 10.8 |
| 100 | 1000 | 105 | 129.0 | 125.0 | 57.8 | 17.20 | 10.8 |
Workshop
This workshop is equipped with professional processing equipment and integrated with standardized material warehousing management, enabling a one-stop production process from precision machining to finished product delivery. It ensures part machining accuracy and production efficiency, meeting various high-specification manufacturing requirements.
Product Research, Development and Testing
Our Product R&D and Testing focuses on optimizing seal performance through advanced simulation and material analysis. All seals undergo rigorous trials, including thermal cycling and pressure tests, to ensure durability, minimal leakage, and long service life in demanding industrial environments.
Industry Solutions
Case Study
Fire System Maintenance: A fire protection contractor needed to replace seals on 20 jockey pumps across a mall. Our 5/8" seals fit perfectly and restored system pressure holding capability immediately, passing the fire inspection.
Testimonials
These are our go-to for jockey pump repairs. They fit right, seal tight, and the price is unbeatable for bulk orders.
—Fire Pump Service Tech, USA
FAQs about Metal Bellows Seals for High Temperature Pumps
Q: Does this fit a Grundfos JP pump?
A: Many Grundfos JP models use a 5/8" or 16mm seal. Please check if your shaft is imperial (5/8") or metric (16mm). We stock both.
Our company is specialized in the production of sealing materials, mechanical seals , cartridge seals.
E-mail: gechacha@aliyun.com
Mobile: +86-18758835650
WhatsApp: +86-18758835650
Add: No8-2, Jinsha road Yuelin Street, Fenghua District, Ningbo, Zhejiang
