Serving Every Industry,
Every Day
Explore our range of innovative, precise, and reliable
products and services.
Sealing Elements
Packing
Gasket
Rubber and PU Moulded Components
Hydraulic
Contract
Service
Sealing Elements
Packing
Gasket
Rubber and PU Moulded Components
Hydraulic
Contract
Service
Sealing Elements
Sealing elements are critical to ensuring hydraulic cylinder reliability, preventing internal fluid leakage and protecting against external contamination. PT SJI Nusantara manufactures and supplies a growing range of high-quality sealing solutions, including piston seal, rod seal, O-rings, packings, gaskets, CNC-machined seals, and moulded seal.
200+
standard seal profiles
25+
seal materials
200+
standard seal profiles
25+
seal materials
Custom-Made Seals with CNC Machining and Moulding
Machine
With in-house production outer diameter (OD) up to ø750 mm, stocked materials, and fast lead times, we deliver custom sealing solutions through both CNC machining and moulding, tailored to any project.
For more seal profiles, materials, and measurements, please contact our team. We can also inspect and measure it for you through reverse engineering.
Packing
Packing (or gland packing) is a sealing material installed in the stuffing box to prevent leakage around moving shafts in pumps, valves, and agitators.
With IDT, we’ve expanded our offerings to include packing, gland packing, spiral wound gaskets (SWG), and other advanced sealing solutions.
Gasket
Gasket is a sealing element placed between two stationary surfaces (such as flanges) to prevent fluid or gas leakage under compression.
With IDT and KWO, we offer gaskets made from PTFE, ePTFE, and graphite. Available in tapes, rings, and sheets.
Rubber and Polyurethane Moulding
With our rubber moulding capabilities, we can also produce customized seals, gaskets, diaphragms, and couplings for various industrial applications, including valves, heat exchangers, and rotating equipment.
We offer high-quality materials including, but not limited to
NBR, HNBR, FPM (Viton), Silicone, PU, NBR Canvas, EPDM
sourced from trusted global suppliers to meet your toughest industrial demands.
Hydraulic
With our hydraulic system expertise, we design, manufacture, and service custom hydraulic solutions, including cylinders, power units, pumps, valves, and other parts, tailored for various industrial applications such as heavy machinery, manufacturing lines, and material handling equipment.
With 13+ Years of experience delivering reliable hydraulic repair solutions, we are ready to assist you.
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Hydraulic Repair & Service Solutions
1
Re-manufacture Cylinder Components (rod, tube, piston, gland, etc.)
2
Cylinder Upgrade & Modification (stroke extension, design improvements, material changes)
3
Rod Re-chroming / Hard Chrome Plating
4
Tube Re-honing / Bore Surface Refinishing
5
Seal Replacement & Custom Seal Kits
6
Welding & Fabrication (flanges, clevis, ports, and bracket repair)
7
Cylinder Assembly & Functional Testing
8
Pressure Testing & Leakage Inspection
9
Hydraulic Troubleshooting &
Failure Diagnosis
10
Oil Flushing & Contamination Control
11
Hydraulic Pump Testing with Test Bench (performance test for pumps, motors)
12
Hose Crimping & Hydraulic Hose Fabrication
13
On-Site Inspection & Maintenance Support
14
Final Painting & Finishing
Need something not listed above? Let us know, our team is ready to assist.
Whatever the hydraulic
challenge, we’re ready.
Tell us your problem,
let us deliver the solution.
Contract Service Program
We also offer contract-based service partnerships,
covering maintenance and repair over an agreed duration.
Not only for hydraulic systems, but also for
machinery and other industrial equipment.
