AIGI Environmental Inc.
AIGI 21MSC Multi-Silicone-Core Carbon-Fibre Packing
AIGI 21MSC is a continuous-filament carbon-fibre gland packing reinforced with multiple resilient silicone-rubber cores. The elastic cores give the packing exceptional memory, so it keeps sealing even on shafts with extreme radial motion and vibration.
Product Benefits
- Built-in spring action: Shafts that whip, vibrate or run off-centre quickly open up a leak path in ordinary packing, forcing constant gland tightening. The multiple silicone cores in 21MSC act like built-in springs.
- Minimal gland adjustment: The packing rebounds with the shaft's movement, maintaining excellent leakage control with minimal gland adjustment.
- Stem protection built in: A unique inorganic blocking agent and corrosion inhibitor guard the stem against pitting and stop gas and liquid from penetrating the packing body.
- Long-lived construction: Combined with the heat-resistant high-carbon fibre and its double PTFE impregnation, the result is a long-lived, low-maintenance packing for demanding rotating and valve services.
Where It's Used
- Pumps, valves, agitators: 21MSC is designed for pumps, valves, mixers and agitators, the equipment where shaft motion is often at its worst.
- Broad media coverage: It seals a broad spread of media including steam, water, oil, solvents, acids and alkalies.
- One packing, many services: That coverage lets one packing handle most general plant services.
Good to Know
- Multi-core carbon build: The packing is black, built on high-carbon fibre with multiple silicone rubber cores and doubly impregnated with PTFE lubricant.
- Handles demanding ratings: It handles hot services, substantial pump and valve pressures, brisk shaft speeds and a wide pH range.
- Single-core alternative: If your equipment sees moderate rather than extreme shaft motion, the single-core AIGI 21SC offers the same chemistry with one resilient core.
- Pick for worst vibration: The multi-core 21MSC is the pick when vibration and radial movement are at their most severe.






