Ballpoint pen refill UNI SXR-C7, blue

UNI SXR-C7 Refill – Revolutionary Writing Ease

Product: UNI SXR-C7 Replacement Refill
Color: Blue

Many are familiar with the frustration when a favorite pen starts skipping or the ink fades after a few months. The UNI SXR-C7 refill, designed for the popular Jetstream series, solves these issues using hybrid ink technology. It is the perfect choice for those who value speed, quality, and durability.

1. Flawless Jetstream Writing Experience

This refill is famous for its "low friction" technology. Writing feels like the pen is gliding across the paper, preventing hand fatigue even after long writing sessions.

• Smooth Flow: Unlike standard ballpoint pens, the SXR-C7 ink flows consistently without any skips.
• Quick Drying: Despite being fluid and rich, the ink dries instantly, making it an excellent choice for left-handed writers – the text will never smudge.

2. Document Security and Resistance

One of the biggest advantages of this refill is its chemical composition. UNI-ball Super Ink technology ensures your notes remain safe for decades.

• Water Resistance: Even if liquid spills on the paper, the ink will not run and will remain legible.
• UV Protection: The ink is resistant to direct sunlight and does not fade over time – which is critical for signing contracts or filling archival documents.

3. Versatility and Design

While specifically designed for the TU-SX-217 (Jetstream) model, it fits many other non-automatic pens requiring a 12 cm length refill. The 0.7 mm tip creates a medium, yet very sharp 0.35 mm line.

Technical Summary

• Type: Hybrid ink refill.
• Tip Size: 0.7 mm (Medium).
• Line Width: 0.35 mm.
• Length: 120 mm.
• Packaging: 12 units per box (price per unit).

Verdict

The UNI SXR-C7 is the "gold standard" in the office supply world. If you are looking for reliability, document security, and the highest level of comfort, this refill is the best investment in your writing quality.

Frequently Asked Questions (FAQ)

Does this refill fit retractable (automatic) pens?

This model is designed for non-automatic pens (with a cap). Retractable models usually require refills with a different construction.

Will the ink fade after several years?

No, this ink is pigment-based and specifically designed for archival security, making it extremely resistant to fading.